Auxiliary lens holder device for use with a keratometer

Details Auxiliary lens holder device for use with a keratometer Auxiliary lens holder device for use with a keratometer

1974-08-01

1976-08-03

Sacher, Paul A.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Folding

351 38, A61B 310

Patent

active

039726029

ABSTRACT:
A lens holder device for mounting an auxiliary lens on a keratometer, comprises a generally circular disc which engages and mounts on the keratometer closely adjacent the front face thereof. The disc has a vertically oriented slot therein which is of a size to accommodate an auxiliary lens. The continuous U-shaped edge defined by the slot in the disc has a groove therein, which engages the edge of an auxiliary lens and positions the auxiliary lens in centered spaced relation with respect to the objective lens of the keratometer, thereby increasing the range of the keratometer.

REFERENCES:
patent: 3416855 (1968-12-01), McClernon
L71400004 (Opt. J. Rev. Optom., vol. 107, No. 18, 9-15-70, p. 27).
Soper, et al., Archives of Opthalm., vol. 67, June 1962, pp. 753-760.

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