The appraisal of the RLME blueprint was agitated out in affiliation with a population-based glaucoma analysis in Rom Klao, a suburb of Bangkok, Thailand amid December 1999 and February 2000.
Subjects were recruited from those entering the glaucoma survey. A absolute of 21 afterwards capacity age-old over 50 and ability appraisal as allotment of the glaucoma analysis were requested to abide added beheld acuity abstracts afterwards an account of the study. The alone added admittance archetype for accord in the RLME blueprint appraisal was acquaintance with the Roman alphabet, such that capacity could apprehend both the RLME and ETDRS charts.
The designs of the acuity archive are summarised in Figure 1a and Table 1.
The RLME blueprint (a) and the ETDRS blueprint (b).
The RLME blueprint active the architecture attack of the ETDRS chart4 in acceding of logarithmic letter admeasurement progression, interletter acceding and interline spacing. The RLME blueprint differed from the ETDRS blueprint in the use of Tumbling E optotypes, and in accepting alone three optotypes per line. In addition, the blueprint was adapted in an attack to accommodate bendability with account to curve interaction. Curve alternation (also accepted as crowding) is a acclaimed abnormality whereby the accuracy of an optotype of a accustomed admeasurement depends aloft its adjacency to surrounding optotypes.
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