What does the condition Narrow Angles mean?

• The angle of the eye is the area where fluid normally drains out of the eye.
• In some individuals, the angle is narrower than normal, and this often gets worse with advancing age due to the development of cataracts.
• If the angle is narrow but not totally closed, the intraocular (eye) pressure would most likely be normal without any evidence of glaucoma, that is without any damage to the optic nerve. Individuals who have this are called primary angle closure suspects.

• However, if the angle is already narrow, it could actually physically close suddenly in certain circumstances thereby blocking the drainage system of the eye and resulting in a sudden increase in the intraocular (eye) pressure. This would cause sudden pain and redness of the eye with blurring of vision. This condition is called acute angle closure glaucoma and can be potentially serious and difficult to treat.

• In some individuals with narrow angles, there could also possibly be intermittent episodes of raised intraocular pressure which could result in intermittent episodes of mild eye pain or headaches. In some individuals, sustained increase in the intraocular (eye) pressure may develop and damage the optic nerve. This condition is called chronic angle closure glaucoma (CACG).

Risk factors for Narrow Angles (PACS):

• Family history of narrow angles
• Family history of angle closure glaucoma
• Age ≥40 years old
• Severe long-sightedness (hyperopia)
• Certain ethnic groups are more likely to have narrow angles, in particular East Asians.