Two eyes are better than one: binocular enhancement in the contrast domain.

  • Joel Rabin
  • Published 1995 in
    Ophthalmic & physiological optics : the journal…


The purpose of this study was to compare the improvement in visual acuity (VA) with the improvement in contrast sensitivity (CS) with two eyes as compared with one. Computer generated letter charts were used to measure VA and small letter CS (20/25 Snellen equivalent) in 13 emmetropic subjects. Letter size (for VA) and contrast (for CS) were varied in equal… (More)


2 Figures and Tables