KERATOMETER Russian patent published in 2001 - IPC

FIELD: medical engineering. SUBSTANCE: device has combined conical mirror having conical mirrors covered with internal and external mirror lining and produced as a set of truncated cones with various generatrix inclination angles relative to the optical axis. The common axis of all conical mirrors of the combined conical mirror is aligned with optical axis of objective in which focal plane a measuring mark designed as luminous ring is located. EFFECT: high accuracy and reliability of measurements; wide range of functional applications. 2 cl, 4 dwg