Illinois Society for the Prevention of Blindness

While glaucoma can occur without warning, the following symptoms are possible.

Any single symptom is a good reason for you to check with your eye doctor, hospital clinic, or your local health department for an eye examination.

• Rainbow colored rings (halos) around lights.




• A narrowing of the visual field (loss of side vision).




• Frequent changes in eye glass prescriptions without improvement of vision.




• Abnormally poor vision in dim light.




• Fuzzy or blurred vision which may come and go.




• Vague headaches or eye aches, particularly after watching movies or television in darkened rooms.