Perimetric method and apparatus

Details Perimetric method and apparatus Perimetric method and apparatus

1985-06-05

1988-04-12

Bovernick, Rodney B.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Subjective type

A61B 302

Patent

active

047370246

ABSTRACT:
The present invention provides an oculo-perimetric device for use in measuring the field of vision of a subject and comprises an extended area visual target 1 having a large plurality of generally regularly, angularly and/or radially, spaced apart individual target elements 2, disposed around a central reference target element 3 across substantially the whole of the area within a predetermined radial separation R from said reference target 3. The individual target elements 2 are provided with sequence indicating means 4 formed and arranged so as to define a visually discernible predetermined sequence for fixing of a subject's eye 5 on successive adjacent individual target elements 2. The central reference target element 3 is formed and arranged so as to be visually more prominent than the individual target elements 2.

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