Stereoscopic retinal camera

  • US 5,355,253 A
  • Filed: 11/10/1992
  • Issued: 10/11/1994
  • Est. Priority Date: 11/30/1991
  • Status: Expired due to Fees
First Claim
Patent Images

1. A stereoscopic retinal camera which enables at least one of the stereoscopic observation of the fundus of the eye and the production of a stereoscopic picture of the fundus and a front portion of the eye by dividing a light beam reflected by the fundus into two light beams and transmitting the two light beams respectively along the light paths of separate image forming optical systems, said stereoscopic retinal camera comprising:

  • a focus adjustment means for photographing the fundus and the front portion of the eye; and

    an optical correction means for correcting an inter-image pitch between a right image and a left image so as to be correspondent when at least one of the fundus and the front portion of the eye is photographed by operating said focus adjustment means;

    wherein said focus adjustment means comprises an auxiliary optical system for changing a focus area from the front portion of the eye to the fundus or from the fundus to the front portion of the eye; and

    wherein said auxiliary optical system has a refracting power corresponding to a difference between the refracting power of an average eye and the refracting power of the front portion of the average eye.

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