The Canon RK-5 Autorefractor Keratometer combines refraction and keratometry readings in one compact, efficient unit with wide measurement range. The Canon RK-5 Autorefractor Keratometer can be utilized to document lens opacity (retinal illumination), PD. corneal diameter, and contact lens checking is easy to perform along with peripheral measurements. The Autorefractor Keratometer can be connected to a Canon BJ or LBP printer.