[A microdialmeter for measurement of the anterior chamber depth]

A microdialmeter is designed to measure the anterior chamber depth by determining the distance advanced by the slitlamp that is focused first on the posterior surface of the cornea and then on the anterior surface of the lens. An isosceles right triangular block is fixed onto the slitlamp to transform its anterior-posterior movement into the transverse direction to be measured conveniently by the microdial with a precision of 0.01 mm.