Table 2 Repeatability of 2WIN-S.

From: Agreement and repeatability of scotopic pupil size measurement with the 2WIN-S portable refractor in Chinese adults

Pupil Size

M1

M2

Paired Mean Difference (95%CI)

P value

CoR (95%CI)

Mean ± SD

Mean ± SD

t

p

Scotopic (mm)

6.24 ± 0.79

6.29 ± 0.83

 − 0.04 (− 0.08 to 0.01)

 − 2.379

0.019

0.37 (0.32 to 0.43)

  1. M1, the mean value of the first measurement of 2WIN-S; M2, the mean value of the first measurement of 2WIN-S; mm, Millimeter; CoR, coefficients of repeatability; OPD-Scan III: Optical path difference-Scan III.
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