Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Subjective type
Patent
1992-03-04
1993-12-14
Arnold, Bruce Y.
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Subjective type
351243, A61B 302
Patent
active
052707504
ABSTRACT:
The invention relates to an apparatus and a method for finding blind spots in the eye of a person tested. In examinations carried out to date, it was necessary to scan the entire image field of the person tested. According to the invention an image with a plurality of image points lying closely side-by-side is offered to the person tested, the variations in the brightness of which image points are presented at a high frequency, and additionally, a fixation mark at a defined place. The apparatus and the method can be used in all types of examinations of the field of vision.
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Bernhard J. Lachenmayr and Patrick M. O. Vivell, "Perimetrie", Georg Thieme Verlag Stuttgart, New York, 1992, title pages and pp. 325-328.
Article, "Pattern Discrimination Perimetry and Conventional Perimetry in Early Glaucoma Detection", Bruce Drum et al., 5 pages.
Aulhorn Elfriede
Koest Gert
Arnold Bruce Y.
Dang Hung Xuan
Oculus Optikgeraete GmbH
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