AUTO REFRACTO-KERATOMETER (URK-800A) 
measures the refraction and keratometry in a sequence by non-contactive method, the results can be checked all at once. In addition, the pupil distance is automatically measured and displayed after refraction  measurement  of  both  eyes  is  performed. Not  only  the  usual  refractometry  and keratometry, but also corneal diameter and base curve of contact lens can be measured with this one instrument. Thus, measurements of eye and prescriptions for glasses and contact lenses can be made more efficiently. Because the URK-800F covers a wide measurement range, from -25D to +22D, even an examinee with strong myopia can be measured. The URK-800F is equivalent to the predicate device URK 800 and URK 700 other ophthalmic diagnostic devices used to determine the optical prescriptions for myopia, hyperopia and astigmatism.