Angle Closure Glucoma
This condition can be acute or chronic. It consists of increased pressure in the front chamber (anterior chamber) of the eye due to sudden (acute) or slowly progressive (chronic) blockage of the normal circulation of fluid within the eye.
Acute angle-closure glaucoma is caused by a rapid or sudden increase in intraocular pressure (IOP) Fluid is continually produced inside, and drains out of, the normal eye. This fluid (called aqueous humor) is unrelated to the tears, which are only on the outside of the eye. High pressure inside the eye is caused by an imbalance in the production and drainage of fluid in the eye. If the channels within the eye that normally drain the fluid from inside the eye do not function properly or are blocked, the pressure within the eye will rise. In this case, more fluid is continually being produced but cannot be drained because of the improperly functioning or blocked drainage channels. This results in an increased amount of fluid inside the eye, which is a limited space, thus raising the intraocular pressure.