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Decrease in stereoacuity in the seventh decade of life
Author(s) -
Brown Brian,
Yap Maurice K. H.,
Fan Wallace C. S.
Publication year - 1993
Publication title -
ophthalmic and physiological optics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.147
H-Index - 66
eISSN - 1475-1313
pISSN - 0275-5408
DOI - 10.1111/j.1475-1313.1993.tb00442.x
Subject(s) - stereoscopic acuity , optometry , environmental science , medicine , ophthalmology , visual acuity
We measured stereoacuity in 41 subjects with normal Snellen acuity in each eye, and normal ocular health. Patients were measured in each of the age ranges 21–28, 41–49, 51–59 and 60–70 years. Stercoacuity was reduced from about 16 sec are for the three younger groups to about 27 sec arc for the older subjects. Since stereopsis has a cortical neural substrate, these data suggest that there may be cortical changes affecting the interaction of information from the two eyes with advancing age, but whether these changes result from loss of contrast sensitivity, instability of ocular alignment or binocular stress, all of which have been reported in elderly subjects, is not known.