The visual acuity test is the most common eye exam. It measures how well you can see letters and numbers at different distances.

A slit lamp examination is a test that examines the front of the eye. It uses a bright light and a magnifying lens to look at the cornea, iris, pupil, and lens.

A fundus examination is a test that examines the back of the eye. It uses a bright light and a magnifying lens to look at the retina, optic nerve, and macula.

Tonometry is a test that measures the pressure inside the eye. It is used to diagnose and monitor glaucoma.

Cataracts are the most common cause of blindness worldwide. They are a clouding of the lens of the eye.

Age-related macular degeneration is the leading cause of blindness in the United States. It is a disease that affects the macula, which is the part of the retina responsible for central vision.

Open-angle glaucoma is the most common type of glaucoma. It is a chronic condition that damages the optic nerve, which is responsible for sending signals from the eye to the brain.

Blurred vision is the most common symptom of diabetic retinopathy. It is caused by damage to the blood vessels in the retina.

Surgery is the only treatment for cataracts. During surgery, the cloudy lens is removed and replaced with a clear artificial lens.

Medication is the most common treatment for glaucoma. Eye drops are used to lower the pressure inside the eye.

Laser therapy is the most common treatment for age-related macular degeneration. It is used to destroy abnormal blood vessels in the retina.

Laser therapy is the most common treatment for diabetic retinopathy. It is used to destroy abnormal blood vessels in the retina.

The best way to prevent eye problems is to get regular eye exams. Eye exams can help detect eye problems early, when they are easier to treat.

You should get an eye exam every year, even if you don't have any eye problems. This is especially important if you are over the age of 40 or have a family history of eye problems.

If you experience any of these symptoms, you should see an eye doctor right away. These symptoms can be a sign of a serious eye problem.