Another important test is a dilated fundus examination. The eyecare professional places medicated drops into the eye in order to dilate the pupil. After a few minutes, the back of the eye can be examined for early signs of glaucoma, such as optic nerve damage. If either of these tests shows indications of glaucoma, the practitioner will perform a visual field test, or perimetry, to measure the patient's vision when looking to the front and to the sides. It can help determine whether any loss of peripheral vision has taken place.
Glaucoma affects side vision before center vision.
Perimetry is repeated once or twice a year for those diagnosed with glaucoma to ensure that no further deterioration has occurred. The final assessment when glaucoma is suspected is gonioscopy. The eyecare provider will use a special device to look into the eye and see whether the drainage angle is open or closed, allowing him to determine which type of glaucoma is present. There is no cure at the present time for glaucoma. However, there are effective ways to keep the disease under control.