Perimeter

Details Perimeter Perimeter

2007-12-18

2007-12-18

Mai, Huy (Department: 2873)

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Subjective type

C351S206000

Reexamination Certificate

active

10953419

ABSTRACT:
A perimeter for examining a visual field of an eye of a patient, includes: a presentation unit, which presents an examination target at each of various positions around an eye fixation point to which the patient's eye is visually fixed; a position determination unit, which determines at least one of positions of an optic pappila, a central fovea and a macula lutea on a fundus of the patient's eye; and a control unit, which determines a running state of a nerve fiber bundle on the fundus based on the determined position, and which controls the presentation unit to present and move the examination target based on the determined running state of the nerve fiber bundle.

REFERENCES:
patent: 4279478 (1981-07-01), Matsumura
patent: 5037194 (1991-08-01), Kohayakawa et al.
patent: 5323194 (1994-06-01), Campbell et al.
patent: 5463431 (1995-10-01), Suzuki et al.
patent: 6053865 (2000-04-01), Sugiyama et al.
patent: 6705726 (2004-03-01), Tanassi et al.
patent: 2003/0157464 (2003-08-01), Tanassi et al.
patent: 6-54804 (1994-03-01), None
patent: WO 93/18702 (1993-09-01), None

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