Those with approximately 10% or less of normal vision are therefore considered blind.This definition of blindness provides a practical model for organizations such as social-service agencies, educational, medical and government institutions.Cataracts A cataract is a clouding of the crystalline lens of the eye.The purpose of the lens is to bring the light rays entering the eye to a focus on the retina.So, that made me think about the idea of dating after losing your sight.While, this isn't really “dating advice” per say, I do think I've got a couple of things to offer when it comes to this topic. Just fill in the form below to receive the free copy of our e Book in PDF or Word format. The syndrome of nonverbal learning disabilities is now well recognized in the field of neuropsychology.
This area is responsible for control of colour vision.
These statistics indicate that the agency serves more than 80 000 blind and visually impaired Canadians (1994).
CNIB officials estimate that approximately 90% of these persons have some residual vision.
There are roughly 4 major causes of blindness and visual impairment in Canada: macular degeneration, diabetic retinopathy, glaucoma and cataracts.
The remaining causes are from various diseases, genetic predispositions and accidents.