Glaucoma occurs when a build-up of fluid creates pressure in the eye, which then damages the optic nerve^1^. The optic nerve is responsible for the transmission of information from your eyes to your brain, and damage associated with it can lead to severe vision loss, and in the worst case, blindness^1^.
There are four different types of glaucoma, stemming from different causes^2^:
1. NHS. Glaucoma. Available at: [http://www.nhs.uk/conditions/Glaucoma/Pages/Introduction.aspx]
2. Glaucoma Research Foundation. (2016) Types of Glaucoma. Available at: [http://www.glaucoma.org/glaucoma/types-of-glaucoma.php]
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