Three Mirror Universal Diagnostic Lens
This classic "Goldmann" type lens has three mirrors angled at 59 degree, 67degree, and 73 degree to permit viewing of the peripheral fundus and anterior chamber angle. 36 degree of the posterior pole can be viewed through the center of the lens. 0.93x image magnification, 18mm contact diameter, and lens height of 32mm. 140 degree static gonio FOV and 1.08x laser spot magnification. Manufactured by Ocular.