Manual ophthalmoscope

Details Manual ophthalmoscope Manual ophthalmoscope

A - Human Necessities

61

B

88/121.5

A61B 3/00 (2006.01) A61B 3/12 (2006.01)

Patent

CA 1202510

ABSTRACT OF THE DISCLOSURE The inventive manual ophthalmoscope is provided with a housing 1 which is closed on all sides and in which the optical components 7, 8, 9, 13, 14 are housed in an entirely dustproof manner. The necessary switching oper- ations for interposing correction lenses 15, 16, lighting field masks, color filters etc. into the illumination and/ or observation light path 2, 3 are effected by electro- magnetic drives 17, 18, 19, 20 which are adapted to be operated by means of operating elements 21, 22, 23 provided on the outside of housing 1 in optimum positions from an ergonomic point of view. The display of refraction values of correction lenses 15, 16 interposed into the observation light path as well as information deducible therefrom is effected in an optoelectronic manner.

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