Wales Council of the Blind

Glossary Browser

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General Ophthalmic Services (GOS) health

The provision of sight tests when clinically necessary to eligible patients by optometrists or ophthalmic medical practitioners including providing optical vouchers to eligible patients to assist them in the purchase of glasses or contact lenses.

Giant cell or temporal arteritis eye condition

A condition affecting the arteries which can cause serious sight loss if untreated.

Glaucoma eye condition

A group of eye conditions which cause optic nerve damage and can affect vision. Glaucoma damages the optic nerve at the point where it leaves your eye.

Grants uncategorised

Financial assistance, often specifically directed towards, and restricted to, the purpose for which the grant was established.

Guide dog uncategorised

Guide dogs are assistance dogs trained to lead blind or visually impaired people around obstacles. Although dogs can be trained to navigate various obstacles, they are red–green colour blind and incapable of interpreting street signs. The human does the directing, based on skills acquired through previous mobility training.