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Sungpyo Hong, Joanna Narkiewicz, Randy H. Kardon; Comparison of Pupil Perimetry and Visual Perimetry in Normal Eyes: Decibel Sensitivity and Variability. Invest. Ophthalmol. Vis. Sci. 2001;42(5):957-965.
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purpose. To compare the sensitivity and variability of pupil perimetry with
visual perimetry at the same retinal locations in normal subjects.
methods. Pupil perimetry was performed on the right and left eyes of 10 normal
subjects using a computerized infrared pupillometer equipped to present
perimetric light stimuli and record pupil light reflexes. Eleven
locations were tested at different intensities along the horizontal
meridian of each eye, and the decibel sensitivity of the pupil light
reflex was compared with the visual threshold at the same location.
results. The shape and height of the hill of vision (retinal sensitivity) was
very similar between the right and left eyes of each individual using
either pupil perimetry (R 2 = 0.69) or
standard threshold perimetry (R 2 =
0.62) but was less similar between subjects. Comparisons between pupil
and visual sensitivity revealed a lack of correlation at the same
retinal location in normal eyes (R 2 =
conclusions. The high intereye correlation for either pupil or visual sensitivity
may provide an important tool for detecting focal or asymmetric visual
field damage. Although the basic shape of the sensitivity profile of
pupil and visual responses was similar under the conditions of testing,
the two did not correlate well within each eye among the normal
subjects. This highlights that similarities do exist in the sensitivity
profile of the two pathways, but they do not seem to vary in the same
proportion between normal individuals.
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