Regular eye examinations by your eye doctor are the best way to detect glaucoma. A glaucoma screening that only checks pressure is insufficient to determine if you have glaucoma.
During a glaucoma evaluation, the ophthalmologist will measure your intraocular pressure (tonometry), inspect the drainage of your eye (gonioscopy), evaluate any presence of optic nerve damage (ophthalmoscopy), and test the field of vision of each eye (visual field testing of perimetry). Photography of the optic nerve or computerized imaging may be recommended. These tests may need to be repeated on a regular basis to monitor any changes in your condition.