Types of glaucoma
There are two major kinds of glaucoma.
1. Open angle glaucoma is the most common, and its victims are frequently unaware of its presence and progression.
2. Angle closure glaucoma is uncommon. The condition causes severe pain and loss of vision and requires immediate medical care. If you have it, you will know instantly. One doctor called it a "toothache" in the eye. It attacks suddenly and painfully. Pressure inside the eye rises quickly to a damaging level, usually causing severe headache, pain in the eyes, and possible vomiting. The pressure must be reduced immediately, or blindness will result, sometimes in a matter of days. Like acute appendicitis it presents a critical emergency, but acute glaucoma can be permanently cured by medicine and surgery.

