Eye Health Medical Reference

Learn about lighting for low vision in your living and working spaces. Consider the color temperature and brightness of your lights as a start.

A low vision exam is where your doctor tests how your vision loss affects your daily life. Learn about the purpose and results of this test today.

Learn about photochromic lenses. Discover how these lenses work, what they’re made from, and if they’re right for you.

Find out what you need to know about scleral contact lenses. Learn about their advantages and disadvantages and how to use them safely.

Discover the different types of canes that can benefit people who are blind or have low vision. Learn some tips for selecting and using the cane that's best for you.

SMILE surgery corrects your vision and may enable you to see without glasses or contact lenses. Learn about the advantages and risks of this eye procedure.

Double vision (diplopia) is deeply disturbing and hampers your daily activities. Learn about prism lenses and how they can help if you're seeing double.

Anisocoria is when the pupils of your eyes are unequal in size. Learn about the causes, dangers, and treatment of this condition.

Double eyelids and monolids, or single lids, are two different shapes of the eyelid. When, though, is surgery to change your eyelid shape necessary?

Contrast sensitivity is an important part of healthy vision and is needed for daily tasks. Learn about the causes, symptoms, and diagnosis of contrast sensitivity loss.

What to know about computers for the visually impaired: how accessible computers work, how to choose one, and where you can find one.

Learn more about guide dogs, how they're trained, and how to get one.

Find out how to keep your home organized and safe if you have vision loss.

Learn about Charles Bonnet syndrome, including causes, symptoms, treatment options, and more.

Diagnosing inherited retinal disease is a long process. Learn what tests you’ll need and how they can help you plan your next steps.

ICL surgery is a procedure that implants contact lenses and is an alternative to Lasik. Learn more about the risks and benefits of the procedure.

Find out what you need to know about sixth nerve palsy cramps and learn about its causes, symptoms, and treatment.

Endophthalmitis is when the tissues of your eyes get infected due to a foreign object. Learn about its causes, symptoms, diagnosis, treatment, and prevention.

Learn about asteroid hyalosis, a typically benign eye condition.

Esotropia is an eye condition that causes one or both eyes to turn inward. Learn more about this condition, what causes it, how to treat it, and when to see your doctor.

Cold weather can be your enemy if you have dry eye disease, but these simple steps can help you preserve eye moisture and stay comfortable

Eyelid ectropion occurs when your eyelid muscles weaken and pull away from your eye. Learn more about this condition, the causes, symptoms, and possible treatments.

Several rare diseases make up the condition known as inherited retinal dystrophy. Learn about their causes, symptoms, and treatments.

A Roth spot is a hemorrhage in the retina. Learn more about its causes, symptoms, and treatment options.

Learn what retinal drusen are, what causes them, symptoms, treatment options, and more.

Visual acuity is the clarity of vision when measured at a distance of 20 feet. Learn more about what it means, how it's tested, and more.

Depth perception is how your eyes produce 3D images. Learn about how your eyesight works to focus and make images appear correctly today.

Find out what you need to know about carotid-cavernous fistula, and discover the causes, risks, and treatments, and how it may affect health.

Eye floaters are small specks or shapes that you may see in your vision. Learn more about the cause and how to treat them.

Scleral buckling is a surgical procedure used to repair a retinal detachment. Learn more about when you need it, how to prepare for the surgery, and the long-term outlook.

Palinopsia is when you see an image repeatedly, even after looking away from it. Learn about how it is caused, and what it is commonly treated with.

Xerophthalmia is an eye disease caused by vitamin A deficiency. Learn more about what causes it, what to expect, and more.

Learn what a visual field is, how to test it, when to test it, and what different types of tests can be used to test the visual field.

Buphthalmos means that one or both eyeballs are larger than normal. Learn about what causes it, what to expect, and more.

Learn about conjunctival chemosis, what causes this swelling of the membrane that covers the eye, and how chemosis is treated.

Learn more about how castor oil can help dry eyes, tear production, and more.

Fluorescein angiography is a test for your eyes. Learn about how it’s done, what to expect, why it’s done, and more.

Exophoria is when your eyes drift outward out of your control. Learn about the causes, symptoms, and treatment options for this condition today.

Learn about pinhole glasses, including whether the popular claims made about them are true, what studies have been done on them, and the many ways eye doctors use them.

Learn what snow blindness is, including what causes it, how to treat it, how to prevent it, and more.

The weather, the climate, and conditions in your home and office can trigger dry eye disease or make it worse. Learn more about how your surroundings affect your eyes.

Inflammation, your body's response to injuries and germs, may contribute to dry eyes. In turn, dry eyes can make eye inflammation worse. Learn more about the link between dry eye disease and inflammation.

Think you might have astigmatism? Learn how to check for this eye condition at home and when you need to see an eye doctor.

Pink eye, or conjunctivitis, is an inflammation of the lining of the eye. Learn about home and prescription remedies to speed up your recovery, and when to see a doctor.

A stye is a red, hot, and tender bump on the outer (and sometimes inner) edge of your eyelid. Its appearance is similar to that of a pimple or a boil.

Exercising your eyes can help relieve symptoms of eye strain. Learn the best exercises for eye strain, how to get started, and how to keep your eyes healthy.

A neuro-ophthalmologist is a medical doctor who specializes in treating vision issues linked to neurological conditions. Learn about the conditions they treat and when you might need to visit one.

In thyroid eye disease, your immune cells attack healthy eye tissue. Learn about the causes, symptoms, and long-term effects.

Learn how treatment of thyroid eye disease can ease your symptoms and help correct any damage you may have from the condition.

Thyroid eye disease can cause redness and puffiness. It can make your eyes bulge and shorten your eyelids so they don't close. Learn more about symptoms.