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. Author manuscript; available in PMC: 2015 Oct 30.
Published in final edited form as: JAMA Ophthalmol. 2013 Aug;131(8):1016–1025. doi: 10.1001/jamaophthalmol.2013.120

Figure 3. Overall Longitudinal LogMAR Visual Acuity (VA) Deterioration.

Figure 3

Average logMAR VA from all visits from 40 patients was plotted against age, which showed that VA tended to worsen with age. A, Least-squares regression analysis with a slope reflecting VA deterioration with time (in logMAR units/y) and corresponding R2 coefficient. B, Polynomial regression analysis with corresponding R2 coefficient. Visual acuity measurements from patients younger than age 5 years or those taken from patients after initiation of experimental therapies were excluded. The R2 values for these calculations did not improve with setting a floor of analysis at higher ages (eg, excluding data points at younger than age 20 years).