A Definition Of Glaucoma
The basic definition of glaucoma is a condition where pressure inside the eye
rises to the
point of causing damage to the optic nerve with associated loss of vision. There
are a number
of causes of glaucoma but the most common type of glaucoma is called open angle
The second most common type of glaucoma is called angle closure glaucoma.
In open angle glaucoma the trabecular meshwork does not work properly and aqueous
drain out of the eye. Fluid continues to be produced and pressure builds up
inside the eye. This
process is slow and initially does not cause any symptoms. If the glaucoma goes
irreversible damage will occur to the optic nerve causing loss of visual
function. In the case of
angle closure glaucoma the iris is pushed forward against the back side of the
cornea and the
trabecular meshwork is obstructed causing the pressure inside the eye to rise.