Anstice, Nicola S. Jacobs, Robert J. Simkin, Samantha K. Thomson, Melissa Thompson, Benjamin Collins, Andrew V. Do picture-based charts overestimate visual acuity? Comparison of Kay Pictures, Lea Symbols, HOTV and Keeler logMAR charts with Sloan letters in adults and children - Fig 4 <p>Bland Altman comparisons of visual acuity measurements between ETDRS and pediatric charts in adults (A-D) and children (E-H and I-L with two outliers removed). A positive bias indicates the second chart gave better acuities.</p> Sloan letters;Kay Picture optotypes;shape cues aid;Diabetic Retinopathy Study;Lea Symbols;Crowded Keeler logMAR;chart design features;uncrowded Landolt C VA measurements;reference Landolt C task;Kay Pictures optotypes;Conclusion Kay Pictures over-estimated VA;ETDRS;DS;25 adults;Keeler logMAR charts;Results Crowded Kay Pictures;HOTV;VA measurements;Crowded Kay Pictures;children Purpose Children 2017-02-02
    https://plos.figshare.com/articles/figure/Do_picture-based_charts_overestimate_visual_acuity_Comparison_of_Kay_Pictures_Lea_Symbols_HOTV_and_Keeler_logMAR_charts_with_Sloan_letters_in_adults_and_children_-_Fig_4/4612018
10.1371/journal.pone.0170839.g004