1 of 9 / Eye & Vision Basics
View AllHow Does Your Eye Work?
Learn about the anatomy of your eyes and how each part of the eye works in order to create visual output.
What Is the Visual Field?
The area that you can see at one time without moving your eyes is called your field of vision or visual field.
What Is Acuity of Vision?
Acuity of vision is a term used to describe the clearness or sharpness of your vision when measured at a distance of 20 feet.
What to Know About Depth Perception
Your eyesight depth perception is how images appear three-dimensional (3-D).
2 of 9 / Pediatric Eye Conditions
View AllEye Exams in Your Baby's First Year
Does your baby really need an eye exam in their first year? Absolutely.
Eye Problems in Premature Babies
Preemies are more likely to have health problems, including eye conditions.
What Is Retinopathy of Prematurity?
The smaller and more pre-term a baby is at birth, the greater their chance of having retinopathy of prematurity (ROP).
Why Does Your Newborn Have Eye Discharge?
What if when you look into your newborns eyes, you see that they have sticky discharge? Is it something to be concerned about?
3 of 9 / Common Eye Problems
View AllTop Causes of Eye Problems
Most people have had an eye problem. Some are minor and go away on their own, or are treatable at home. Others need expert care.
What Are Ocular Surface Diseases?
If your eyes are dry and itchy, there could be many causes. But chronic dry eyes could be caused by an ocular surface disease.
Eye Problems: What to Expect as You Age
Your eyes change as you age. Some problems become more common as you get older, although they can affect anyone at any age.
What Is a Carotid-Cavernous Fistula?
Carotid cavernous fistula is a condition that affects your eye. It can come on suddenly after a head injury or slowly over time.
4 of 9 / Common Vision Problems
View AllWhy Is My Vision Blurry?
If you have blurry vision, you might chalk it up to age or needing new glasses. But it can be a sign of other health problems, too.
Understanding Vision Problems -- the Basics
The most common forms of impaired vision are errors of refraction. Myopia, hyperopia, and astigmatism are examples.
Symptoms of Common Vision Problems
If you've been experiencing problems with your vision, learn about the symptoms of these common eye conditions.
Diagnosing & Treating Vision Problems
Periodic comprehensive eye exams by an eye doctor are essential to monitor the health of your eyes and diagnose problems.
5 of 9 / Vision Correction
View AllDo I Need Reading Glasses?
As your eyes get less flexible, your close vision gets worse. It may make you wonder if you need reading glasses.
Eyeglasses That Do the Job
There are many different types of eyeglass lenses for various lifestyle activities.
Eyeglasses: Tips to Help You Pick the Right Lenses
As technology advances, so do lenses. New ones are lighter, don’t break as easily as glass, and can be treated with a UV filter.
What Is Pupillary Distance?
Pupillary distance, also called interpupillary distance or PD, is a measurement of the distance between your pupils.
6 of 9 / Eye Diseases & Conditions
View AllDetecting Eye Diseases and Conditions
To catch eye conditions early and help prevent vision loss, you should get a baseline eye exam when you are 40.
What Is Thyroid Eye Disease?
Thyroid eye disease is an immune system disorder. Inflammation causes the muscles and tissue around your eyes to puff up.
Ocular Hypertension
Ocular hypertension is when the pressure inside the eye is higher than normal.
What Is Uveitis?
The word “uveitis” is used because the swelling most often affects the part of your eye called the uvea.
7 of 9 / Retinal Conditions
View AllRetina: What to Know
One of the most important parts within the eye is the retina. The retina is the layer of cells at the back of your eyeball.
Retinitis
Retinitis is a disease that threatens vision by damaging the retina -- the light-sensing tissue at the back of your eye.
What Is Central Serous Retinopathy?
Central serous retinopathy most notably affects the retina. This condition results from fluid building up underneath the macula.
What Is an Epiretinal Membrane?
An epiretinal membrane (ERM) is an eye condition where a layer of cells forms on the inside of your retina.
8 of 9 / Optic Nerve Problems
View AllWhat Is Papilledema?
Papilledema is swelling of your optic nerve. This swelling is a reaction to a buildup of pressure in or around your brain.
What Is Ischemic Optic Neuropathy?
When your eyes’ optic nerve does not receive the proper amount of blood flow, that is called ischemic optic neuropathy.
What Is Optic Atrophy?
Optic atrophy is a condition in which the optic nerve begins to deteriorate. There are a couple of different optic atrophy types.
What Is Optic Nerve Hypoplasia?
Optic nerve hypoplasia is a condition in which the optic nerve is underdeveloped. This often results in a small optic nerve.
9 of 9 / Low Vision & Vision Loss
View AllWhat Is Low Vision?
Low vision is a loss of sight that can’t be corrected with prescription eyeglasses, contact lenses, or surgery.
What Is a Low Vision Exam?
A low vision test is not the same as your typical eye check-up. It’s a longer, more in-depth exam.
Lighting for Low Vision
Get information on low vision aids for reading, task lighting, or entire-house illumination.
Screen Readers for Blind or Low-Vision People
Screen readers allow people who are blind or visually impaired to use devices like phones and computers that have a screen.
Suggested Reads about Eye Health
What Eye Problems Look Like
What do nearsightedness, farsightedness, or going blind look like? See these views and take an eye test in this slideshow from WebMD's medical editors.
12 Reasons for Watery Eyes
Always tearing up? Everyday things can make your eyes water, but so can some medical conditions. Use WebMD's slideshow to get a better understanding how your eyes work.
Why Is Your Vision Blurry?
Blurry vision may not really be a problem with your eyes. It's usually no big deal, but it could be a sign of a serious illness or medical emergency.
Unusual Eye Conditions
From bloody tears to multiple pupils, learn more from this WebMD slideshow about the unusual conditions that can affect your eyes.
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