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]

isopter

/isop·ter/ (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]

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.
References in periodicals archive ?
Additional static testing is then used to verify the regions within a given isopter and as catch trials to reveal false positive, negative and fixation losses.
Generally the blind spot position/size and at least three isopters are presented, having been selected to demonstrate the location, depth and extent of any significant variation in the visual field.
In autumn, a slight return of beetles and isopters in the menu of the hedgehog but the hymenoptera remain the most preponderant in the feeding of this animal.
Visual field improvement was defined as an improvement of the field defect by at least 10[degrees] horizontally and 15[degrees] vertically using similar isopters on the Goldman visual fields and significant changes in mean and pattern deviations in Humphrey visual fields.
John's peripheral visual fields were plotted using Goldmann visual field equipment (see Figure 1 for the left eye and Figure 2 for the fight eye) with 14e and 12e isopters.
Studies on the effects of age on the central and peripheral isopters of the visual field in normal subjects.