Eye Exam

What Exactly is an Eye Chart?

If there’s one aspect of optometry that everyone recognizes, it’s the traditional eye chart, with its rows of big letters on top, which gradually become smaller the farther down you go. This chart is usually known as the Snellen chart.

Yet how much do you really know about this eye chart? Are all eye charts the same? How are these eye charts used? And when were they invented?

Here’s everything you need to know about eye charts and more!

What is an Eye Chart?

An eye chart is one of the tools your eye doctor uses to assess your eyesight. Based on how well you can see various letters on the chart, your optometrist will determine whether you have myopia (nearsightedness), hyperopia (farsightedness), presbyopia (age-related farsightedness) or astigmatism, and will measure the prescription that will give you the clearest, most comfortable vision.

Are All Eye Charts The Same?

There are a number of variations to the standard Snellen eye chart. The one an eye doctor uses depends on the personal needs and abilities of the patient. For example, eye doctors will use charts with pictures or patterns for younger children who may not have learned to read or identify letters and numbers.

There are also certain charts that specifically measure distance vision, while others are better for measuring near vision.

History of the Snellen Eye Chart

The Snellen eye chart was developed by Dutch eye doctor Hermann Snellen in the 1860s. Before this standardized eye chart was developed, each eye doctor had their own chart that they preferred to use.

Having so many different eye charts made it impossible to standardize the vision correction available to patients. Eyeglass makers didn’t receive the defined measurements they needed to accurately design, manufacture and measure the optical prescriptions their patients needed.

For the first time, the Snellen eye chart allowed a person to provide a standardized prescription from any eye care provider they chose to any eyeglass maker, and get the same optical lenses to accurately correct their vision.

How The Snellen Chart Is Used in Eye Exams

The standard Snellen chart displays 11 rows of capital letters, with the first row consisting of a single large letter. The farther down the chart you go, the smaller the letters become.

Your eye doctor will ask you to look through a phoropter – an instrument used to test individual lenses on each eye during an eye exam – and look at the Snellen chart placed 20 feet away. Your eye doctor will prescribe the lenses that provide you with the clearest and most comfortable vision.

In many offices, where 20 feet of space may not be available, you’ll be asked to view the chart through a mirror. This provides the same visual experience as if you were standing 20 feet away.

If you have 20/20 vision, it means you can see what an average person can see on an eye chart from a distance of 20 feet. On the other hand, if you have 20/40 vision, it means you can only see clearly from 20 feet away what a person with perfect vision can see clearly from 40 feet away.

If you have 20/200 vision, the legal definition of blindness, this means what a person with perfect vision can see from 200 feet away, you can see from 20 feet away.

Does 20/20 Visual Acuity Mean Perfect Vision?

No. While eye chart tests identify refractive errors, they can’t detect signs of visual skill deficiencies or diseases such as glaucoma, cataracts or macular degeneration. These are diagnosed using advanced equipment as part of a comprehensive eye exam with your local eye doctor. Early diagnosis and treatment of eye conditions are essential to ensuring long-term vision and eye health.

For more information, give us a call at or visit us in person at , today!

Q&A With Your Local Optometrist

How do you keep your eyes healthy?

You only have one set of eyes – don’t take them for granted!

Make sure to implement the following habits for healthy eyes (and body). These include:

Eating a balanced diet rich in fiber, fruits and vegetables
Drinking plenty of water to hydrate your body and eyes
Not smoking, and avoiding 2nd-hand smoke
Wearing sunglasses to protect your eyes from ultraviolet (UV) rays
Maintaining normal BMI with regular exercise
Regular visits to your eye doctor as recommended

What health conditions can an eye exam detect?

A comprehensive eye exam can often detect certain underlying diseases that can threaten your sight and eye health, such as diabetes, high blood pressure, high cholesterol, tumors, autoimmune conditions and thyroid disorders. This is why having your eyes checked regularly is key. The earlier the diagnosis and treatment, the better the outcome and the higher your quality of life.

10 Ways to Give Your Eyes Some Love This Valentine’s Day

Valentine’s Day is the time to express your love and appreciation to those you care about most. But it’s also a great opportunity to take the time to pamper yourself — so why not start with your eyes?

Practice these 10 healthy lifestyle habits to help protect your eye health and vision.

1. Be Mindful of the Food You Eat

Fill your plate with fresh fruits and veggies, lean proteins and whole grains. A well-balanced diet is good for your body and can lower your risk of eye disease.

Studies show that foods high in vitamins A, C, E, Omega-3, lutein and zeaxanthin are especially beneficial for promoting eye health.

2. Drink Plenty of Water

Drinking at least eight 8-ounce glasses of water each day will keep your body hydrated and your eyes moist — which is essential for preventing dry eye syndrome. To add some flavor to your water, try adding a splash of lemon juice or swap some of those glasses of water for an herbal tea or other non-caffeinated beverage. Caffeinated drinks have a dehydrating effect, so try to limit your coffee consumption as much as possible.

3. Exercise Regularly

Exercise is widely known for its physical and mental health benefits, but studies show that it can also lower your risk of serious eye conditions and diseases. Cardio exercise in particular has been shown to lower eye pressure and improve blood flow to the retina and optic nerve at the back of the eye. So grab your gym bag and get moving!

4. Don’t Smoke

If you’ve been thinking about quitting, there’s no better time than now. Smoking tobacco significantly raises your risk of developing sight-threatening eye diseases like diabetic retinopathy, cataracts and age-related macular degeneration (AMD), and can also lead to their early development.

Smoking also robs the body of the essential vitamins and minerals it needs to maintain eye health, and contains around 7,000 chemicals that can lead to eye irritation and dry eye.

5. Practice Good Makeup Hygiene

While wearing makeup can accentuate your eyes and make you feel more beautiful, it’s important to note that if not used properly, certain makeup products can adversely affect eye health.

To keep your eyes and vision healthy, make sure to:

Clean your brushes and applicators regularly
Toss any expired products, or eye makeup you’ve used during an eye infection
Only apply makeup to the outer margin of your eyelids
Remove your makeup before going to bed
Never share makeup or use in-store testers

Following these safety tips will help to lower your risk of eye infections and other serious complications.

6. Wear Sunglasses

Studies show that prolonged UV exposure can damage the eyes and lead to the development of sight-threatening eye conditions, like cataracts, macular degeneration and glaucoma, in the future.

Purchase a pair of stylish sunglasses with 100% UV protection and wear them any time you venture outdoors — the sun’s UV rays can penetrate the clouds and reflect off of snow, sand, water and pavement. So keep a pair of sunglasses next to your front door and a spare pair in your bag or car to ensure you have UV protection wherever you go.

7. Prevent Eye Injuries

About 90% of vision loss from eye injuries can be prevented by wearing the right eye protection.

Protective eyewear like sports goggles or glasses with polycarbonate lenses are designed with sturdy materials that are less likely to break or shatter while you play sports, and can protect your eyes from small particles that fly in the air when you mow the lawn or engage in DIY projects.

8. Learn First Aid for Eye Injuries

Let’s be real, accidents can happen even if we take all the right measures to protect ourselves. But knowing what to do in case of an unexpected eye injury can potentially save you or someone you love from permanent eye damage or vision loss.

Note: Any type of eye injury should be taken seriously, and promptly examined by an eye doctor.

9. Avoid Digital Eye Strain

Prolonged screen time can cause eye strain, dry eyes, blurry vision and headaches — and lead to a condition called digital eye strain, also known as computer vision syndrome.

Avoid symptoms of digital eye strain by limiting screen time as much as possible. If prolonged screen time is unavoidable, practice the 20-20-20 rule: set an alarm on your phone as a reminder to take breaks every 20 minutes to focus on an image at least 20 feet away, for at least 20 seconds.

10. Visit Your Eye Doctor

Regular eye exams are crucial when it comes to maintaining your eye health. With an eye exam, your eye doctor can identify early signs of sight-threatening eye diseases and conditions — enabling earlier treatment and increasing your chances for optimal results.

From all of us at Eye Care Associates in Flagstaff, we wish you a Happy Valentine’s Day!

Q&A

What’s the difference between an eye exam and vision screening?

Vision screenings are basic tests of visual acuity, generally conducted by a school nurse or pediatrician. These screenings can’t identify many vision conditions that impact learning or work performance, and are unable to detect ocular health problems.

A comprehensive eye exam, which is performed by an eye doctor, includes tests for visual acuity and functional vision, as well as close examination of the inner and outer structures of the eye.

How often do I need to have an eye exam?

According to the American Optometric Association (AOA), it is important to have your eyes examined every one to two years, depending on your age, whether or not you wear glasses or contacts, your family history of eye disease, and your ocular health to date. Annual eye exams help your eye doctor monitor your eye health and easily identify any changes in your vision.

How Pregnancy Can Affect Your Eyesight

Pregnancy can impact almost every part of a woman’s body and health — including her eyes. In fact, an estimated 14% of pregnant women report experiencing visual changes during pregnancy that usually resolve on their own within a couple of months after giving birth.

Knowing the different visual symptoms that can present when you’re expecting can help alert you to potential underlying health concerns that your physician may need to address.

Normal Visual Changes During Pregnancy

Blurred Vision

Blurred vision is the most common visual symptom that pregnant women may experience. Hormonal fluctuations are usually to blame for the temporary decrease in visual acuity, and your eyesight will likely return to normal soon after giving birth.

The influx of pregnancy hormones causes fluid retention in some areas of the body and can cause the cornea to thicken slightly. As a result, the light entering the eye isn’t focused accurately and vision may be blurred.

Less commonly, blurred vision can signal gestational diabetes, a pregnancy complication affecting 6-9% of pregnant women. The rise in blood sugar level impacts the focusing lens of the eye, leading to blurry vision. If you are diagnosed with diabetes, including gestational diabetes, it’s a good idea to book an eye exam to monitor for retinal changes.

Blurred vision is also a common side effect of dry eye syndrome, a condition characterized by tears that don’t adequately lubricate the eyes, which can be brought on or exacerbated by pregnancy.

Eye Dryness

Pregnancy hormones can cause a reduction in the amount of tears your eyes produce or affect the quality of the tears. These changes can affect a woman throughout her entire pregnancy, but studies show that eye dryness is particularly common in the last trimester. For this reason, some women find it difficult to wear contact lenses in their third trimester and temporarily switch to glasses.

Eye Puffiness

Yet another body part that swells during pregnancy: the eyelids and tissues around the eyes.

Pregnancy-related water retention may cause your eyelids to appear puffier than during your pre-pregnancy days. You may also notice darker areas under the eyes. If your puffy eyes bother you, try limiting your salt and caffeine intake, as they can worsen the problem.

Visual Changes That May Indicate a Problem

The following visual changes warrant a prompt call to your eye doctor or obstetrician to rule out any underlying complications.

Flashes or floaters

Seeing stars during pregnancy can signal high blood pressure, which is associated with preeclampsia — a serious medical condition that requires close monitoring by your physician and possible treatment.

It’s crucial to have your blood pressure monitored throughout your pregnancy, as preeclampsia can potentially endanger the life of mother and child, as well as damage the cornea and retina.

Temporary vision loss

Temporary vision loss is concerning for pregnant and non-pregnant individuals. Vision loss is another warning sign of preeclampsia, so contact your doctor promptly if you suddenly lose any portion of your visual field.

Sensitivity to light

Light-sensitivity can either be a normal side effect of fluid retention in the eye, or it can signal dangerously high blood pressure and preeclampsia.

How We Can Help

At Eye Care Associates, our goal is to keep your vision and eyes healthy throughout your pregnancy and beyond. If you experience any visual symptoms, we can help by thoroughly examining your eyes to determine the underlying cause and provide you with guidance on what next steps to take.

Pregnancy is a wonderful time, when self care should be at the forefront — and that includes comprehensive eye care.

To schedule an eye exam or learn more about our eye care services, call Eye Care Associates in Flagstaff today!

Q&A

Why are regular eye exams important?

Having your eyes evaluated by an optometrist on a regular basis is crucial for detecting early signs of eye diseases and changes in your prescription, including during pregnancy. Many serious eye diseases don’t cause any noticeable symptoms until they’ve progressed to late stages, when damage to vision may be irreversible. Whether or not you wear glasses or contact lenses for vision correction, ask your optometrist about how often to schedule a routine eye exam.

Will my baby need an eye exam after birth?

According to the American Optometric Association and the Canadian Association of Optometrists, babies should have an eye exam within the first 6-12 months of life, even in the absence of noticeable vision problems. Healthy vision is a significant part of healthy overall development, so be sure not to skip your baby’s eye exams!

Back-To-School: Why [Eye_Exams] Are More Important Than Ever

Since the onset of COVID-19, many children have been learning remotely through distance learning programs. While parents are concerned about their children falling behind academically, eye doctors are concerned that undiagnosed vision problems may impact the child’s school performance.

Undetected vision problems may hinder a child’s ability to learn. That’s why eye doctors strongly recommend that children undergo a thorough eye exam before the new school year begins.

While it’s tempting to rely on vision screenings provided by schools, these superficial visual acuity tests can identify only a limited number of eyesight problems. Only a comprehensive eye exam conducted by an eye doctor can accurately diagnose and address a wide range of problems related to vision and eye health.

Why Are Eye Exams Important?

Up to 80% of children’s learning is visual, so even the slightest vision problem can have a negative impact on their academic achievement. Taking a child in for an eye exam once a year will allow your eye doctor to detect and correct refractive errors like myopia (nearsightedness), hyperopia (farsightedness) and astigmatism, and check their visual skills, such as convergence insufficiency, binocular vision, focusing and more.

Comprehensive eye exams are the best way to detect mild and serious eye health conditions. Routine eye exams are especially important for children with a family history of eye health problems.

How Is Vision Affected By Online Learning?

The amount of time children spend looking at digital screens was already a concern in the pre-pandemic era—but the COVID pandemic has only exacerbated the issue. According to the Indian Journal of Ophthalmology, children spent twice as much time on screens during COVID-related closures than they did prior to the pandemic.

For one thing, spending prolonged periods of time on digital devices forces the eyes to work harder, making children (and adults) more susceptible to digital eye strain, one of the hallmark symptoms of computer vision syndrome. People who spend 2 or more consecutive hours staring at a screen are at higher risk of developing this condition.

Some computer vision syndrome symptoms include:

Blurred vision
Dry eyes
Eye fatigue
Eye pain
Headaches
Neck and shoulder pain

These symptoms can be caused by a combination of the following factors:

Glare and reflections from the screen
Excessive time looking at a screen
Poor lighting
Poor posture
Screen brightness
Undetected vision problems

In addition to digital eye strain, several studies have found that children who spend many hours indoors doing “near work” — writing, reading and looking at computers and other digital devices — have a higher rate of myopia progression.

A study published in the American Academy of Ophthalmology’s professional journal, Ophthalmology, found that first-graders who spent at least 11 hours per week playing outside in the sunshine experienced slower myopia progression. Some researchers think that exposure to sunlight and looking at distant objects while playing outdoors might help decrease myopia progression.

While regular eye exams are essential for every member of the family, they’re especially important for those who spend a good portion of their day in front of a screen.

Don’t put off your child’s annual eye exam. Schedule an appointment with Eye Care Associates in Flagstaff today!

Q&A

1. At what age should a child have an eye exam?

According to the American and Canadian Optometric Associations, it’s recommended for a child to have their first eye exam between 6-12 months of age.

Before a child starts school, they should undergo an eye exam, and every one to two years after that, based on their eye doctor‘s recommendation.

2. Does my child need an eye exam if they passed the school vision screening?

Yes! School vision screenings are superficial eye evaluations designed to diagnose a limited number of vision problems like myopia. They do not check for visual skills and other problems that may hinder your child’s academic success.

Your eye doctor will evaluate your child’s vision and eye health, along with visual abilities, including depth perception and eye tracking, to let you know whether your child’s eyes are “school-ready.”

Childhood Myopia Is in Crisis Mode on a Global Scale

When it comes to the prevalence of myopia (nearsightedness), the statistics are staggering. By 2050, nearly half of the world’s population—about 5 billion people—will be myopic. Below are a few useful tips to help you prevent your child from being part of that statistic.

What Is Myopia?

Myopia occurs when the eye elongates, causing light rays to focus in front of the light-sensitive retina rather than directly on it, while looking at something far away. So, people with nearsightedness perceive distant objects as blurred while close-up objects can remain clear.

Myopia tends to develop during childhood, when the eyeballs rapidly grow (along with the rest of the body), mainly between the ages of 8-18. It can worsen slowly or quickly, but it is not simply an inconvenience. People with progressive myopia are more likely to develop serious eye diseases like cataracts, retinal detachment, macular degeneration and glaucoma later in life—conditions which may lead to permanent loss of vision and even blindness.

How To Know Whether Your Child Is Myopic

Below are some telltale signs to watch for:

Blurred distance vision – Objects in the distance are blurred; kids may complain that they can’t see the board
Headaches – When myopia isn’t corrected, it can cause eye strain and headaches.
Head tilting or squinting – If your child squints or tilts his or her head while watching TV, for example, it may be a symptom of myopia.
Looking at objects too closely – If you notice your child moving closer to the TV or squinting as they try to see the writing on the board, it may indicate myopia.

What Parents Can Do to Slow Their Child’s Myopia Progression

Encourage your child to go outdoors for at least 90 minutes a day, preferably in the sunshine. Studies show that playing outdoors reduces the risk of developing myopia and slows its progression.
Limit the amount of time your child spends staring at a screen, reading and doing close work such as homework.
When your child uses a digital screen, make sure that it isn’t too close to the face.
Teach the 20-20-20 rule: During screen time, take a break every 20 minutes to look at an object across the room or out the window about 20 feet away, for at least 20 seconds.

How We Can Help

Certain eye doctors offer treatment methods known as myopia control or myopia management. These include orthokeratology, bifocal or multifocal contact lenses, and eye drops like low dose atropine. Regular eyeglasses and contact lenses don’t prevent its progression but do correct myopia so the child can see and function normally.

If your child shows signs of myopia, schedule an eye exam with Eye Care Associates in Flagstaff as soon as possible.

Q&A

How is myopia diagnosed?

Your child’s eye doctor will perform a thorough pediatric eye exam to diagnose myopia, which often includes a visual acuity test, where the eye doctor will use an eye chart made up of letters of varied sizes. If the test results indicate myopia, then the optometrist may shine a light into their eyes and evaluate the reflection off the retina to determine the degree of refractive error for their prescription.

Can myopia lead to blindness?

High myopia may increase your child’s risk of developing more serious eye conditions later in life, such as cataracts, retinal detachment and glaucoma. Left untreated, high myopia complications can sometimes lead to blindness—which is why routine eye exams are critical.

Why Are Dilated Eye Exams So Important?

Having your eyes dilated during an eye exam may seem like a nuisance. But when you consider the benefits of a dilated eye exam, the temporary blurred vision and sensitivity to light that typically follow are definitely worth it.

What Are Dilated Eye Exams?

At some point during a comprehensive eye exam, your optometrist will shine a bright light into your eyes to examine the back of your eye, called the retina. The problem is that bright light causes the size of the pupil’s opening to shrink, which makes it hard for the optometrist to see a large portion of the retina.

That’s why eye doctors apply special eye drops in each eye to keep the pupils open. A dilated pupil allows for a much more accurate assessment of your eye’s structures, including the focusing lens, blood vessels and tissues at the back of the eye called the retina, as well as the optic nerve and macula.

Dilating the eyes makes it easier for your optometrist to detect the following conditions and diseases:

Cataracts
Glaucoma
Diabetic retinopathy
Macular degeneration
Retinal tumor
Retinal detachment or retinal tears
Eye floaters

It’s important to note that many of these conditions can develop without noticeable symptoms, until they cause vision loss at which point treatment may be more challenging, making dilated eye exams all the more crucial.

The Dilation Process

First, your eye doctor will apply eye drops to each eye to trigger dilation of the pupil. Your eyes should be fully dilated about 10-20 minutes later.

Your eyes will remain dilated for 4-6 hours, and during this time you may be sensitive to light. That’s because the larger pupil allows more light than usual to enter the eye. Many patients find it more comfortable to wear sunglasses until their eyes return to normal.

Reading and using a computer may be difficult with dilated eyes, and your vision may be blurred. Some patients report feeling a tightening sensation in their eyelids, or headaches.

Dilated eye exams are a crucial part of keeping your eyes healthy. To schedule your comprehensive eye exam, call Eye Care Associates in Flagstaff today!

Q&A

#1: At what age should one have a dilated eye exam?

You should have your dilated eye exam no matter your age. Most eye doctors will dilate a new patient at their first exam regardless of age to get a baseline of their retinal health.

#2: Will I be able to return to work after a dilated eye exam?

Everyone reacts differently, so it’s hard to tell. If your job requires you to focus on small print or detail, it may be challenging. Typing and writing may also be difficult with dilated pupils. To be on the safe side, book your appointment at the end of your work day, clear your schedule after your eye exam and only plan to do activities which aren’t visually demanding.

Contact Lenses Wear & Care Do’s and Don’ts

Contact Lenses & Eye Care

Here’s a shocking statistic: According to the CDC, more than 99% of the people who wear contact lenses in the U.S. engage in at least one risky or unsanitary behavior with their lenses!

Contact lenses are a safe and convenient way to correct your vision — as long as they are worn and cared for properly. Engaging in risky behavior when it comes to your lenses can put you at risk of developing eye infections or cause eye damage.

So, if you wear contact lenses, continue reading to learn the correct contact lens protocol. To ask any questions about your contact lenses or schedule a contact lens consultation, call Eye Care Associates in Flagstaff today.

The Do’s of Contact Lens Wear and Care

We can’t stress this enough: Do wash your hands! Before touching your eyes or handling your lenses, thoroughly wash your hands with soap and water. After rinsing, dry your hands on a paper towel or clean lint-free cloth.
Do disinfect your lenses when you remove them from your eyes, using only solutions recommended by your eye doctor.
Do remove your contact lenses before sleeping, swimming, and showering. Contact lenses and water do not mix due to the risk of infection.
Do clean your contact lens case weekly with warm soapy water and replace it every 3 months.
Do carry a pair of glasses with you in case you need to remove your contact lenses.

The Don’ts of Contact Lens Wear and Care

Don’t overwear your lenses. Replace them as often as your doctor recommends. So, replace your monthlies every month, your weeklies every week, and discard daily lenses before bedtime.
Don’t rub your eyes while wearing contact lenses.
Don’t use tap water or saliva (ever!) to rinse or rewet your contact lenses.
Don’t allow makeup to get into your eyes when wearing contact lenses.
Don’t share your contact lenses with anyone — seriously, don’t.
Don’t wear your contact lenses if your eyes feel irritated or appear red. Give them a chance to de-stress before inserting them back into your eyes.
Don’t skip your annual eye exam. Your eyes will thank you.

Frequently Asked Questions – Contact Lenses

Q: What are the latest trends in contact lenses?

A: Many contact lens manufacturers are now producing “daily” disposable contact lenses. These are lenses that are inserted in the morning and thrown away at night. This style of contact lens wear is both convenient and healthy. With these lenses, patients buy fewer solutions and don’t have to keep up with how old their lenses are and when to change them. Daily disposables are also beneficial in causing less allergy and dryness while reducing the risks of infection. Daily lenses are now offered in all types of prescriptions from distance vision to astigmatism and multifocal/bifocal prescriptions.

Q: Is wearing contacts better for sports activity?

A: Yes, wearing contacts provide a wider field of view thus preventing avoidable injuries. Prescription sports goggles work well but when you’re actively sweating your goggles will fog up and start to move around a lot. I recommend contacts a lot for my active patients.

Wearing Daily Disposable Contact Lenses| Eye Care Associates

Enjoy the benefits and comfort of a brand new, clean, crisp pair of contact lenses the very next morning. Contact lens-related infections and eye conditions that result from improper cleaning and storage are a thing of the past. Now, you can enjoy the simple pleasures of crisp, clean, comfortable vision at the start of every day.

What Are The Top Benefits To Wearing Computer Glasses?

Computer Glasses & Eye Exams

What Are Computer Glasses and Do They Make a Difference?

Many people spend most of their waking hours staring at screens, exposing them to the potentially harmful effects of blue light. In fact, if you’re reading this on one of your screens, you’re exposing your eyes to blue light at this very moment.

All this screen time comes at a price: It can cause headaches, eyestrain, insomnia, and possibly eye disease. Blue light glasses (also known as computer glasses) have been touted to combat these problems head-on. But do they really make a difference to those who spend many hours a day staring at screens?

What Is Blue Light?

Blue light is a color in the light spectrum visible to human eyes — though it doesn’t actually appear blue to the naked eye.

It’s a short wavelength that produces high amounts of energy (from 400 to 500 nanometers) and is often referred to as high-energy visible light (HEV). In fact, any source of visible light emits blue light, whether it’s an artificial source like a digital screen or a light bulb, or a natural one, like the sun.

How Does Blue Light Affect Your Eyes?

It Obstructs the Wake/Sleep Cycle

Prior to the invention of artificial light, the sun regulated our sleep schedules. After sundown, the darkness signals to our bodies that it’s time to produce melatonin, the hormone responsible for enabling us to sleep.

Nowadays, we’re exposed to blue light throughout the day and late into the night. While exposure to any light in the evening hours delays the production of melatonin, blue light waves can be particularly problematic as they radically disrupt these signals, causing less melatonin to be generated.

This essentially throws off our natural body clocks, since the brain associates blue light with daytime, making it harder to fall asleep at night and wake up in the morning.

It May Increase the Risk of Macular Degeneration

A 2018 study by the University of Alcalá suggests that a high level of blue light exposure may increase one’s risk of macular degeneration later in life, which can lead to permanent vision loss.

This is because blue light penetrates right through the cornea to the retina, damaging light-sensitive cells in the retina.

It Can Potentially Cause Eye Strain

Blue light scatters more easily than other visible light. This unfocused light reduces contrast and can contribute to digital eye strain, characterized by headaches, neck pain, and blurred vision.

That’s where computer glasses come in.

Research has indicated that lenses that filter out blue light significantly increase contrast. Computer glasses with yellow-tinted lenses may improve comfort levels when viewing digital devices for prolonged periods of time.

Are There Benefits to Wearing Computer Glasses?

As mentioned above, computer glasses reduce blue light exposure from computer screens and other digital devices. But are they worth getting?

According to the American Macular Degeneration Foundation, blue light can cause retinal damage “at greater intensities,” but the amount of light emitted by screens is quite low. Whether there is a cumulative effect requires further research.

Getting Computer Glasses

If you decide to get blue-light blocking lenses, you can find stylish options with or without a prescription. So if you’re farsighted and wear progressive lenses or bifocals, you can get single-lens computer glasses to match your prescription.

You may want to consider getting photochromic lenses, as they provide protection from both UV and blue light, whether indoors or out in the sun. These lenses seamlessly and automatically darken when exposed to UV rays outdoors, and become clear again when indoors.

Eye Care Associates in Flagstaff offers a variety of computer glasses and lenses. Contact us today to discuss the optimal lens features for your lifestyle and get fitted for your perfect pair.

Computer Glasses & Digital Eye Strain | Eye Care Associates

Frequently Asked Questions with Dr. Stephanie Hanson

Q: What Are Computer Glasses and Do They Make a Difference?

A: Many people spend most of their waking hours staring at screens, exposing them to the potentially harmful effects of blue light. In fact, if you’re reading this on one of your screens, you’re exposing your eyes to blue light at this very moment.All this screen time comes at a price: It can cause headaches, eyestrain, insomnia, and possibly eye disease. Blue light glasses (also known as computer glasses) have been touted to combat these problems head-on. But do they really make a difference to those who spend many hours a day staring at screens?

Q: What Is Blue Light?

A: Blue light is a color in the light spectrum visible to human eyes — though it doesn’t actually appear blue to the naked eye.It’s a short wavelength that produces high amounts of energy (from 400 to 500 nanometers) and is often referred to as high-energy visible light (HEV). In fact, any source of visible light emits blue light, whether it’s an artificial source like a digital screen or a light bulb, or a natural one, like the sun.

Quality Frames For Prescription Eyeglasses & Computer Glasses In Cranston, RI. Visit Bing for an eye exam and eyeglasses that match your style.

Are Contact Lenses Safe For Young Children?

Here’s a question we often get at our practice: ‘Is my child too young for contact lenses?’ This is an important question, and the answer may surprise you.

For children with myopia (nearsightedness), contact lenses can be a convenient method of vision correction. It allows kids to go about their day without having to worry about breaking or misplacing their glasses, and enables them to freely participate in sports and other physical activities.

Some children and young teens may ask their parents for contact lenses because they feel self-conscious wearing glasses. Contact lenses may even provide children with the confidence boost they need to come out of their shell. Moreover, these days, it is very popular for children to wear single-use one-day disposable soft contacts, since there is no cleaning or maintenance involved.

Some parents may deny their child’s request for contacts due to concerns about eye health and safety. There’s no reason to worry: contact lenses are just as safe for children as they are for anyone else.

At Eye Care Associates, we provide children, teens, and patients of all ages with a wide variety of contact lenses. If you’re concerned about the safety of contacts for your child, we’ll be happy to explain and explore ways to ensure maximum safety, optimal eye health and comfort. To learn more or to schedule a pediatric eye exam for contact lenses, contact us today.

What Are the Risks of Having My Child Wear Contact Lenses?

A study published in the January 2021 issue of The Journal of Ophthalmic & Physiological Optics found that kids aren’t at a higher risk of experiencing contact lens complications.

The study followed nearly 1000 children aged 8-16 over the course of 1.5-3 years to determine how contact lenses affected their eye health.

The results indicate that age doesn’t have an effect on contact lens safety. In fact, the researchers found that the risk of developing infections or other adverse reactions was less than 1% per year of wear — which is comparable to contact lens wearers of other ages.

But before you decide that contact lenses are right for your child, you may want to consider whether your child is ready to wear them. During his or her eye doctor’s appointment, the optometrist may ask about your child’s level of maturity, responsibility, and personal hygiene. Since many children are highly motivated to wear contacts, they tend to display real maturity in caring for their lenses. That said, in the initial stages, parents may need to play an active role, as their child gets used to inserting and removing the new contact lenses.

It’s important to note that just as with any other medical device, contact lenses are not risk-free. Anyone who wears contact lenses has a chance of developing eye infections or other complications with contact lenses. However, when worn and cared for according to your eye doctor’s instructions, contact lenses are low-risk and perfectly safe for children and teenagers.

So, go ahead and bring your child in for a contact lens consultation! We’ll help determine if your child is ready for contacts and answer any questions you or your child may have. To schedule your child’s contact lens fitting or eye exam, contact Eye Care Associates in Flagstaff today.

The Importance of Eye Exams for Contact Lenses

Are you planning on wearing contact lenses for the first time? Do you need a new contact lens prescription? Are your current contacts not as comfortable as you wish they were? Your eye doctor will perform a contact lens eye exam to ensure that your vision with contacts is clear, comfortable, and safe, providing you with the right lenses for you.

What is a contact lens exam?

If you wear or want to wear contact lenses, you’ll need an eye exam for contact lenses, in addition to your regular comprehensive eye exam. Special tests are performed during a contact lens exam to evaluate your eyes and vision with contacts.

Are eyeglass prescriptions the same as contact lens prescriptions?

No, a prescription for glasses cannot be used for contact lenses. An eyeglass prescription is for lenses that are positioned approximately 12 millimeters from your eyes, whereas a contact lens prescription is measured for lenses that sit directly on the surface of your eye.

The prescription for contact lenses also includes the brand, lens diameter and curvature, which are not part of an eyeglass prescription.

Contact lenses fitting: One size does not fit all

One contact lens size doesn’t fit all eyes. If a contact lens is too flat or too steep for your corneal shape, you may experience discomfort or even eye damage. Your eye doctor will take certain measurements to determine the best contact lens design and fit for your eyes.

Corneal curvature

This measures the curvature of your eye’s clear front surface (cornea) so the eye doctor can select the optimal curve and diameter for your contact lenses. If your eye’s surface is somewhat irregular because of astigmatism or other conditions, you may require a special lens.

Pupil and iris size

The size of your pupil and iris (the colored part of your eye) is also important in determining the best contact lens design.

Tear film evaluation

This test evaluates the quality of your tears, to determine whether they will be able to keep contact lenses and your cornea sufficiently hydrated throughout the day. If you have dry eye disease, standard contact lenses may not be right for you.

Trial lenses

Following the eye exam, you will be provided with trial lenses to verify that the chosen contact lenses offer clear and comfortable vision. This will allow the eye doctor to make any fine adjustments to the prescription.

Contact Lens Eye Exam Near You

Wearing the correct contact lenses for your eyes allows you to enjoy all of the benefits of wearing contacts, while keeping your eyes healthy and comfortable.

If you’re already a contact lens wearer, visit your eye doctor at least once a year to make sure the lenses are still providing you with optimum vision and comfort.

Contact Eye Care Associates in Flagstaff to book your contact lens eye exam today!