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Glaucoma

05:58 EDT 22nd September 2017 | BioPortfolio

Glaucoma is a group of eye conditions that affect vision and can often affects both eyes, usually in varying degrees.  Glaucoma occurs when the drainage tubes (trabecular meshwork) within the eye become slightly blocked which prevents eye fluid (aqueous humour) from draining properly causing pressure to builds up - 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).

Types of glaucoma

 

  • chronic open-angle glaucoma – this is the most common type of glaucoma and 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 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) – this is rare but can be serious. It is usually present at birth or develops shortly after birth. It is caused by an abnormality of the eye
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