Method and apparatus for the corneal positioning of a patient's

Details Method and apparatus for the corneal positioning of a patient's Method and apparatus for the corneal positioning of a patient's

1976-03-22

1980-02-19

Corbin, John K.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Folding

351 39, 351 6, A61B 314, A61B 310, A61B 300

Patent

active

041892151

ABSTRACT:
A method and apparatus are disclosed for accurately positioning a patient's eyes for an eye examination. An eye positioning beam is oriented transversely to the patient's line of sight. A border surface of the beam facing the patient is positioned at the location along the patient's line of sight at which the patient's cornea is to be located during the examination. The patient's head is moved towards the light beam border surface until the border surface and the patient's cornea are tangent. Tangentially is determined by observing an increase in the illumination of the patient's iris. The increased illumination results from a bending and a corresponding reflection of the light rays, which are tangent to the cornea.

REFERENCES:
patent: 824900 (1906-07-01), Bates
patent: 3068745 (1962-12-01), Peck
patent: 3253504 (1966-05-01), Vollmer
patent: 3857639 (1974-12-01), Mason
patent: 3879112 (1975-04-01), Hickey
A. R. Gilliland, Visual Education, vol. Z, Feb. 1921, pp. 21-26, 55.

Affiliated with

Also associated with

Rating

Method and apparatus for the corneal positioning of a patient's does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for the corneal positioning of a patient's , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for the corneal positioning of a patient's will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-650886