isopter

isopter

 [i-sop´ter] a curve representing areas of equal visual acuity in the field of vision.

i·sop·ter

(ī-sop'tĕr), A line of equal retinal sensitivity in the visual field. [iso- + G. optēr, observer]

i·sop·ter

(ī-sop'tĕr) A line of equal retinal sensitivity in the visual field. [iso- + G. optēr, observer]

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.