Ocular diseases can damage the optic nerve. Irreversible vision loss occurs because of significant optic nerve damage or degeneration of the optic nerve. Prevention and treatment are the first steps to take because vision loss cannot be restored after optic nerve damage.

Some numbers and facts about vision loss from World Health Organization and Vision Atlas.

I know it may surprise many but color blindness is not a form of blindness. It is a deficiency in the way you see color. Those with this vision problem have difficulty distinguishing certain colors, such as red and green or blue and yellow.

Albinism is an inherited condition present at birth. It is characterized by a reduced or lack of pigment. See how it affects the eye condition.

Retinitis Pigmentosa (RP) falls into a group of rare, genetic disorders that involve a breakdown and loss of cells inside of the retina. Check details here.

What is glaucoma? Glaucoma is one of the leading causes of blindness: high pressure damages the nerves and causes irreversible vision loss. See more in Zoomax.

What is cataract? Cataract is a kind of blur in vision due to protein denaturation in the crystalline lens which is one of the causes to low vision.

What is diabetic retinopathy? Follow Zoomax to see the cause, symptoms, types and how this most common diabetic eye disease change normal eyesight to low vision.

What is AMD? Learn the symptom, cause, dry and wet type of Macular degeneration, also called Age-related macular degeneration (AMD) and with Zoomax.

WHO Definitions of low vision. Persons who would benefit from low vision care also exist among those who are currently categorized as blind.