Compact visual field tester

Details Compact visual field tester Compact visual field tester

1999-01-22

2000-10-31

Manuel, George

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

A61B 310

Patent

active

061391506

ABSTRACT:
A visual field tester which measures the visual field of a patient's eye, which visual field tester includes: (a) an optical radiation source having an entrance pupil plane, which optical radiation source outputs one or more spots of optical radiation; and (b) an optical relay system which relays a point in the entrance pupil plane or a point conjugate to the point in the entrance pupil plane to the patient's eye with a one-to-one magnification, wherein the optical relay system comprises a beamsplitter disposed at an angle with respect to a retroreflector array.

REFERENCES:
patent: 4397531 (1983-08-01), Lees
patent: 4561738 (1985-12-01), Humphrey et al.
patent: 5046835 (1991-09-01), Billeter et al.
patent: 5418584 (1995-05-01), Larson
patent: 5491524 (1996-02-01), Hellmuth et al.
patent: 5808589 (1998-09-01), Fergason

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