Gonioscopy is a frequent test used in the evaluation of a patient with glaucoma.
The
eye must be round in order to maintain its pressure. Unlike a tire,
which uses air, the eye has a fluid system for pressure. Inside the
eye, there is a tissue, called the ciliary body, which pumps fluid into
the eye. This fluid is drained out of the eye via the trabecular
meshwork.
Most glaucoma is caused by disease or
alteration of the trabecular meshwork. This structure, which is near
the front of the eye, cannot be seen under normal conditions.
Gonioscopy
consist of placing a contact lens on the front of the eye. Topical
anesthesia is used in order to prevent discomfort. The contact lens
allows the doctor to examine the trabecular meshwork for signs of
glaucoma disease.
