Perimeter

Details Perimeter Perimeter

2007-07-17

2007-07-17

Schwartz, Jordan (Department: 2873)

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Subjective type

C351S226000, C351S211000

Reexamination Certificate

active

11170791

ABSTRACT:
A perimeter for examining a visual field condition of an examinee's eye, includes: a target presenting unit a response unit brain activity detecting unit which detects an activity condition of a visual cortex of the examinee; and an operation unit which determines if the response with the response unit with respect to presentation of the target is resulted from a fact that the examinee can perceive the target based on a detection result of the brain activity detecting unit and which obtains the visual field condition on the basis of the presentation condition of the target and the response result in consideration of the determination result of the brain activity detecting unit.

REFERENCES:
patent: 4832480 (1989-05-01), Kornacker et al.
patent: 5323194 (1994-06-01), Campbell et al.
patent: 5598235 (1997-01-01), Heijl et al.
patent: 6685321 (2004-02-01), Suzumura et al.
patent: 06-054804 (1994-03-01), None
patent: 7-504589 (1995-05-01), None
Obtronics (2002) No. 7, p. 199-204 with partial English translation of (3. Brief Summary of Optical Topography: 3.1 Image Measuring Method of Brain Activity) in pp. 200-201.

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