Optometrists need a technique to view the anterior chamber angle in the diagnosis of glaucoma. Present methods require a corneal anesthetic and may damage the cornea. The Brandreth-Saladin goniolens was developed to avoid these objections and to provide the optometrist with a method for binocularly viewing the fundus with the slit lamp. Two additional techniques are mentioned which hold the same promise for optometric gonioscopy as does the Brandreth-Saladin lens. In addition, the anterior chamber angle as seen in gonioscopy is described and pertinent comments about its anatomy are made for the diagnosis of closed and open angle glaucoma.