A bubble-free goniolens

A modified Goldmann-type gonioscopy lens has been developed which can be successfully applied to the cornea without requiring methylcellulose or other viscous solution between the cornea and the inner surface of the contact lens. This goniolens does not indent the cornea, leaving the anterior chamber angle configuration unaltered during gonioscopy. In addition the optic disc can be visualized with the slit lamp by looking through the central portion of the goniolens.