Specialists report that most people who have glaucoma do not notice any symptoms until they begin to lose some vision.
As optic nerve fibers are damaged by glaucoma, small blind spots may begin to develop, usually in the side – or peripheral – vision.
Many people do not notice the blind spots until significant optic nerve damage has already occurred. If the entire nerve is destroyed, blindness results.
Another type of glaucoma, acute angle-closure glaucoma, does produce noticeable symptoms. In angle-closure glaucoma, there is a rapid buildup of pressure in the eye (called intraocular pressure or IOP), which may cause any of the following:
- Blurred vision
- Severe eye pain
- Haloes (which may appear as rainbows) around lights
- Nausea and vomiting
Angle-closure glaucoma is a rare but serious form of glaucoma. If you have any of these symptoms, call your ophthalmologist immediately. Unless treated quickly, this specific form of glaucoma can result in blindness.