| 摘要 |
An eye testing device for both subjective and objective testing of the eye is disclosed. Corrective optics having variable spherical and astigmatic inputs are placed at a location remote from a patient's eye. Intermediate the corrective optics and the patient's eyes focusing optics are placed. These focusing optics are preferably in the form of a field mirror. The focusing optics focus a real image of the corrective optics to the patient's eye. A projector projects a real image through the corrective optics to a specifically coherent real image location between the corrective optics and the patient. For subjective eye testing, the corrective optics are varied responsive to subjective patient visual acuity to provide the desired prescription. For objective eye testing, a projector acts as a light source typically projecting an image on the retina of the eye through and into an examiner-patient light path. The corrective optics - placed at the remote location between the examiner and projector on one hand, and the patient on the other hand- are varied responsive to objective patient visual acuity, usually determined by conventional retinoscopic techniques. Thereafter with corrective optics prescribed, examination of the eye, exterior or interior, can occur through the patient-examiner eye path.
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