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. Author manuscript; available in PMC: 2011 Aug 1.
Published in final edited form as: Optom Vis Sci. 2010 Aug;87(8):526–531. doi: 10.1097/OPX.0b013e3181e61a88

Figure 2.

Figure 2

The frequency of binocular gain (2a) or binocular loss (2b) for subjects less than eighty years old (white bars) and those 80 years and above (dark bars) for each of the 5 spatial vision measures. HCVA: High contrast visual acuity; LCVA: Low contrast visual acuity; CS: Contrast sensitivity; SKD: Low contrast acuity measured at reduced luminance using the SKILL dark chart; Glare: Low contrast acuity in the presence of surrounding glare. Note that binocular gain tends to be less common among the older age group (2a). Also note that for all measures except LCVA and CS, binocular loss is more common among the older age group so that the overall frequency of binocular effects remains relatively stable across age at approximately 20% on average across measures.