Fundus examination device

Details Fundus examination device Fundus examination device

1990-07-11

1992-10-06

Kamm, William E.

Surgery

Truss

Pad

351206, 351221, A61B 600

Patent

active

051522950

ABSTRACT:
A fundus examining device is provided in which laser light from a laser light source is deflected for scanning in two dimensions over an eye fundus of an eye being examined and light reflected from the eye fundus is photoelectrically detected with a photodetector to obtain fundus information. The fundus examining device includes an optical system for observing an anterior portion of the eye which is illuminated by illuminating light to determine how the pupil of the eye is dilated. To this end, an objective mirror is provided which reflects light of the wavelength of the laser beam but is transparent to the illuminating light. The objective mirror reflects the deflected laser beam to illuminate the fundus of the eye, while guiding light from the illuminated anterior portion of the eye to the observing optical system.

REFERENCES:
patent: 4283124 (1981-08-01), Motsumura
patent: 4400144 (1990-02-01), Kobayashi
patent: 4673264 (1987-06-01), Takahashi
patent: 4743107 (1980-05-01), Aizu et al.
patent: 4813778 (1980-03-01), Madate et al.

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