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. Author manuscript; available in PMC: 2013 Mar 4.
Published in final edited form as: J Cataract Refract Surg. 2011 Aug;37(8):1523–1529. doi: 10.1016/j.jcrs.2011.02.034

Figure 1.

Figure 1

Panel A – Retinal image simulation of a diffraction limited (6mm pupil) logMAR chart. Panel B – Retinal image simulation of the combined effects of diffraction (6mm pupil) and a small amount of simple defocus blur designed to produce a noticeable loss in RIQ letter and no loss of acuity. Panel C – Retinal image simulation of the combined effects of diffraction (6mm pupil) and an amount of simple defocus blur that alters measured acuity. Single line in all three panels corresponds to 0.0 logMAR acuity.