Refraction techniques using modified streak retinoscope assembly

摘要

Techniques and retinoscopic apparatus for measuring or determining a patient's optical error are disclosed. The techniques include overrefraction and can be performed from a fixed position, avoiding the practitioner's need to move back and forth relative to the patient's eye. Equipment associated with the apparatus is adapted to record the location of the retinoscope slide (relative to its upper or lower position) during the examination to provide information concerning the optical error present in the patient's eye.