Gonioscopy is an examination of the anterior region of your eye (between the cornea and iris). It is used in the diagnosis and management of glaucoma. To diagnose open or closed angle glaucoma, the angle between the iris and cornea is examined to see if it is opened or closed. This is an essential part of the overall examination as this part of the eye is important for regulating intra-ocular pressure. Scars, vascular membranes and any congenital defects that may cause elevated intra-ocular pressure can also be detected with this exam.
Prior to the procedure, your doctor will numb your eye with drops so you are comfortable. Your doctor places a special lens lightly in front of your eye and points a narrow beam of bright light. A slit lamp or microscope is used to view your drainage angle. This procedure takes less than 5 minutes and is painless. Gonioscopy does not effect your vision.