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Table 2 Median, standard deviation (Sw) and maximum difference between repeated measurements under each light condition evaluated. Likewise, the percentage of eyes with a range of variation of repeated measurements of 0.5 mm or lower was also provided

From: Intrasession repeatability of pupil size measurements under different light levels provided by a multidiagnostic device in healthy eyes

  S L M P
Median (mm) 5.3 3.2 2.9 2.6
Sw (mm) 0.2 0.1 0.1 0.1
Max difference (mm) 1.0 0.9 1.0 0.5
Max difference < =0.5 mm (%) 82 97 96 100