... ... Glaucoma

Glaucoma

Glaucoma is a condition which can affect sight, usually due to build up of pressure within the eye.Glaucoma often affects both eyes, usually to varying degrees. One eye may develop glaucoma quicker than the other.The eyeball contains a fluid called aqueous humour which is constantly produced by the eye, with any excess drained though tubes.Glaucoma develops when the fluid cannot drain properly and pressure builds up, known as the intraocular pressure.This can damage the optic nerve (which connects the eye to the brain) and the nerve fibres from the retina (the light-sensitive nerve tissue that lines the back of the eye).
Diagram explaining Galucoma

Types of Glaucoma


There are four main types of glaucoma:
• chronic open-angle glaucoma – the most common type of glaucoma which develops very slowly

• primary angle-closure glaucoma – this is rare and can occur slowly (chronic) or may develop rapidly (acute) with a sudden, painful build-up of pressure in the eye

• secondary glaucoma – this mainly occurs as a result of an eye injury or another eye condition, such as uveitis (inflammation of the middle layer of the eye)

• developmental glaucoma (congenital glaucoma) – a rare but sometimes serious type of glaucoma which occurs in very young children, caused by an abnormality of the eye

Read more information about the causes of glaucoma.