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Measuring reading ability is a crucial part of assessing patients who complain of reduced vision. Foreign language versions of such charts need to be developed and validated. It is difficult to measure or predict Korean reading ability due to a lack of a representative reading charts in Korean, and previous charts have limited capacity to detect deficits in reading ability among Korean patients with eye diseases. Two printed versions of the reading chart were created. Thirty-four patients with no change in vision in the last three months and no expected change in vision in the next four weeks were included in this study. The results were validated by testing 13 normal-sighted adults (group 1), 14 patients with various macular diseases whose visual acuity was equal or better than 0.5 logarithm of the minimum angle of resolution (logMAR) (group 2), and seven patients with various macular diseases whose visual acuities were between 1.3 logMAR and 0.5 logMAR (group 3). Inter-chart and intra-subject repeatabilities were assessed for maximum reading speed (MRS) and critical print size (CPS). A total of 38 sentences were tested on 34 adults in three groups. Groups 1 and 2 did not differ significantly in terms of MRS and CPS. The MRS was lower in group 3, for each chart and between visits. The CPS was larger in group 3, for each chart and between visits, with the exception of chart 2 during visit one. With regard to test-retest reliability, the intraclass correlation co-efficients (ICCs) for chart 1 and chart 2 were more than 0.900. With regard to inter-chart reliability, the ICCs were more than 0.892, respectively. The reading chart developed in this study was reliable in producing consistent results among a normal Korean population and patients with various macular diseases. [ABSTRACT FROM AUTHOR]

Background The aim of this study was to develop MNREAD acuity charts in the Greek language ( MNREAD-GR) and establish their repeatability in a normal-sighted population. Methods One hundred and eighty Greek sentences were constructed based on the design principles of the Minnesota Low Vision Reading Test. The software used to validate them for width was adjusted to the parameters of the non-Latin characters used in the Greek language ( MNTest-GR) and width-validated sentences were then checked for literacy by two language teachers. Pilot testing followed in 20 adults and two groups of 20 children. Subsequently, three versions of the MNREAD-GR chart were printed and validated for repeatability: 20 adults read MNREAD-GR charts 1, 2 and 3 in random order over two sessions. A linear mixed-model analysis was performed for near visual acuity ( VA), maximum reading speed and critical print size to identify the contribution of each source (individual subject, session, chart and residual error) to the total variance. Subject variance determined the intraclass correlation coefficient. Results One hundred of the initial 180 sentences were validated with MNTest-GR and approved for literacy correctness. Of those, 57 sentences were selected after pilot testing, and used in the final printed chart in random distribution among three versions. The intraclass correlation coefficients were 0.72 for VA, 0.87 for maximum reading speed and 0.46 for critical print size. The between-charts within-session within-subject component accounted for a maximum five per cent of the variance. The between-sessions within-subject component had a maximum of one per cent. The coefficient of repeatability was 0.08 logMAR for VA, 46.96 words per minute for maximum reading speed and 0.10 logMAR for critical print size. Conclusion The created MNREAD-GR acuity chart is a standardised clinical test that can be used reliably to measure near acuity, reading speed and critical print size in Greek-speaking literate patients of all ages. [ABSTRACT FROM AUTHOR]