Surgical procedures done by an ophthalmologist are cataract removal, treatment of certain types of glaucoma, and surgery for a detached retina. By the time the individual notices changes in their eyesight, damage could have already occurred. A common type of glaucoma is primary open-angle glaucoma. The color of your eye, or the colored iris, is located behind the cornea and is visible only because the cornea is transparent, revision
Considering how fragile they are, it doesn't take much abuse to cause damage. It includes a transparent lens that helps focus light on the retina. If you are driving, pull over the road side until your vision returns. The iris has control over how much light enters into the eye; the muscles of the iris sphincter with contract with strong light and will dilate with dim light, revision.
All of my opinions are stated to a reasonable degree of professional and scientific certainty. It's best to repeat this exercise 100 times each day. Now that you've seen some of the symptoms and probable outcomes of untreated, age-related eye disease, I hope you agree that early identification and treatment are the best ways to prevent the most devastating affects of eye disease. As people age, they may experience some loss of vision acuity, revision.