KERATOMETER Russian patent published in 2003 - IPC

FIELD: medical equipment, in particular, ophthalmology. SUBSTANCE: keratometer has light source, measurement mark, and conical mirror system comprising block of mirrors with internal surfaces covered with mirror coating and block of mirrors arranged in axial alignment with above mentioned block of mirrors and provided with external surfaces covered with mirror coat. Second of mentioned blocks of mirrors is equipped with central through mirror opening. Blocks are made with different inclination angles of generatrices of related mirror surfaces. Mirror surfaces are configured so as to simplify construction of keratometer. EFFECT: increased precision of measurements, wider range of permissible errors in transverse guidance and simplified construction. 4 dwg