FIGURE 3-1 Illustrative data from the MNREAD Reading Acuity Chart for a subject with normal vision (upper curve) and a subject with age-related macular degeneration (lower curve.)

Reading speeds were obtained by measuring the time to read sentences composed of 60 characters (10 words) at each of several print sizes. Three parameters are shown for each curve: reading acuity (arrow at the left end), critical print size (arrow at the bend), and reading speed (dashed line). Source: Gordon E. Legge, unpublished. Back