Is glaucoma painful?

Glaucoma: A form of glaucoma called acute angle closure glaucoma can cause an abrupt rise in eye pressure that can be very painful.

Can be: Quick rise in pressure, acute angle closure, corneal decompensation due to high pressure can cause pain. Usually glaucoma is not painful.

Not ordinarily: The two main types of glaucoma are open angle ; angle closure. The former is painless and progressive, if not stabilized. The latter also tends to be slow and progressive, but usually gradually closes the drainage angle of the eye. If acute angle closure of the angle occurs, considerable pain results and loss of vision ensues, if not urgently treated by medicine and laser or incisional surgery.