Predisposing factors for primary closed angle glaucoma
The following have been implicated as risk factors for the development of the disease:
- sex - female: male ratio 4:1
- race - more in Asians
- short axial length - hypermetropia
- shallow anterior chamber - in females>males
- increasing age - anterior chamber becomes shallower as the lens grows
- small corneal diameter (1)
In predisposed individuals the following systemic drugs may induce angle closure:
- nebulised bronchodilators - ipratropium bromide and/or salbutamol
- selective serotonin re uptake inhibitors
- tricyclic antidepressants
- muscle relaxants (2)
Reference:
- 1. The College of Optometrists 2009. Glaucoma (primary angle closure) (PACG)
- 2. European Glaucoma Society (EGS) 2008. Terminology and guidelines for glaucoma (3rd edition)
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