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Binocular summation in visually evoked responses and visual acuity
Author(s) -
Heravian J. S.,
Jenkins T. C. A.,
Douthwaite W. A.
Publication year - 1990
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.1475-1313.1990.tb00861.x
Subject(s) - monocular , visual acuity , vernier acuity , binocular vision , amplitude , stimulus (psychology) , audiology , optics , optometry , physics , psychology , medicine , psychotherapist
Monocular and binocular transient visually evoked responses (VER) were recorded on 50 adult subjects using a pattern reversal stimulus (check size 5.5 min arc). The peak‐to‐trough amplitude of the VER wave was measured and compared with the subjective visual acuity (Landolt C). The binocular amplitude enhancement over the monocular amplitude was around 26% across the acuity range studied, whereas the mean binocular subjective visual acuity improvement was around 11.3%, but this varied from 1% at the high acuity end to 17% at the low acuity end of the range.