isopter /isop·ter/ (i-sop´ter) a curve representing areas of equal visual acuity in the field of vision.
i·sop·ter ( -s p t r)n. A curve of equal retinal sensitivity in the visual field designated by a fraction, the numerator being the diameter of the test object, and the denominator being the testing distance. |
isopter
In the determination of visual fields, it is the contour line representing the limits of equal retinal sensitivity to a given test target. See visual field; perimeter.
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