Cataracts are cloudy areas in the lens of the eye that can cause changes is vision.A cataract is a naturally occurring process where the lens in the eye becomes progressively opaque, or no longer see-through. This obscures vision to the point where glasses can no longer correct the blur. Cataract surgery involves the replacement of the cataract with an artificial lens.
diabetic retinopathy
Diabetic Retinopathy occurs when diabetes causes the blood vessels inside the retina, the light sensitive tissue in the back of the eye, to leak. Although mild diabetic retinopathy may not obscure vision at all, it can progress to absolute blindness.
glaucoma
Glaucoma is a progressive disease that damages the optic nerve. It is often caused by increased pressure in the eye which can be managed with eye drops and surgery. Mild glaucoma can damage peripheral vision where advanced glaucoma can lead to complete blindness.
macular degeneration
Macular degeneration is an age related disease that damages the center of the visual field. This is caused by the build up of yellow deposits called drusen in the macula of the eye (Dry Macular Degeneration.) Increased drusen can also lead to abnormal blood vessel production that can leak fluid into the macula (Wet Macular Degeneration.)
