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. Author manuscript; available in PMC: 2012 Jul 1.
Published in final edited form as: Ophthalmology. 2011 Mar 31;118(7):1310–1317. doi: 10.1016/j.ophtha.2010.12.018

Figure 3.

Figure 3

LOWESS plots depicting the relationship between change in vision-specific health related quality of life (HRQoL) across levels of mean change in visual field [Mean deviation (MD) expressed in decibels (dB)], by severity of impairment in baseline visual acuity (VAI). The figure shows that the effect of change in visual field on vision-specific HRQoL varies by levels of VAI (mild to severe vs. none). The crossing of lines suggests interaction between change in visual field and VAI on their effect in producing a change in vision-specific HRQoL. The intersection of the two broken lines (----) represents the point where there is no change in visual field and no change in vision-specific quality of life.