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Br J Ophthalmol 85:432-436 doi:10.1136/bjo.85.4.432
  • Original Article
    • Clinical science

The development of a “reduced logMAR” visual acuity chart for use in routine clinical practice

Table 4

Reading time for each of the five chart designs

Chart Minimum 25th centile Median 75th centile Maximum
ETDRS 41 79 106 147 405
RLM A 13 42 59 75 182
RLM B 14 22 34 54 161
RLM C 19 34 47 70 104
Snellen 19 70 110 161 417

  • Figures are time taken in seconds to complete a chart reading—that is, measurement

  • time excluding score calculation time.

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