Method and device for testing eyes

Details Method and device for testing eyes Method and device for testing eyes

1997-12-09

1999-06-22

Dang, Hung Xuan

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Methods of use

351222, A61B 300

Patent

active

059147725

ABSTRACT:
The present invention relates to a device and methods for testing eyes. This method is objective in nature and can be performed by a technician, only requiring specialized personal to interpret the final prescription. The method comprises: Obtaining autorefractor, corrected autorefractor, and autolensometer results; Calculating sphere; Performing a Red-Green test; Calculating cylinder and axis; Determining minimum cylinder power; Determining final sphere; and Recording all data, wherein the steps of calculating sphere and calculating cylinder and axis do not rely upon subjective interpretation of responses made by the subject in order to complete the method. Furthermore, this method is capable of being fully processed by a computer so that a printout is produced that is suitable for interpretation by a refractionist.

REFERENCES:
patent: 3880501 (1975-04-01), Munnerlyn
patent: 4697895 (1987-10-01), Sekiguchi et al.
patent: 4861156 (1989-08-01), Terry
patent: 5223864 (1993-06-01), Twisselmann
patent: 5329322 (1994-07-01), Yancey
patent: 5331394 (1994-07-01), Shalon et al.
patent: 5420651 (1995-05-01), Kamppeter

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