Sleep apnoea linked to increased risk of glaucoma

Researchers compared 1000 individuals with OSA and 6000 controls, finding after five years those with OSA were 67% more likely than the others to develop open-angle glaucoma. The incidence rate per 1000 person years was 11.26 (OSA group) versus 6.76 (no OSA).

The mechanism may be mechanical, due to intraocular pressure causing optic neuropathy, or vascular, as prolonged hypoxia is said to damage the optic nerve, the authors speculated.

Ophthalmology 2013: 120:1559-64