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. 2013 Aug 13;54(8):5432–5440. doi: 10.1167/iovs.13-12012

Table 2. .

PLR Constriction Amplitudes as a Function of Age and Stimulus Intensity

Stimulus Intensity, Log Photons/cm2/s
Age, mo
4 6 8 10 12

Constriction Amplitude, %
8 1.05 ± 0.61 1.24 ± 0.88 1.81 ± 1.21 1.36 ± 0.69 1.86 ± 1.5
8.5 11.94 ± 4.68 8.46 ± 2.95 5.92 ± 4.76 13.46 ± 5.21 7.6 ± 2.73
8.75 18.77 ± 6.33 17.26 ± 5.32 8.48 ± 6.1 24.7 ± 7.65 15.46 ± 4.3
9 28.67 ± 5.28 29.09 ± 5.19 22.3 ± 7.5 31.58 ± 6.37 26.64 ± 6.37
10 40.68 ± 3.05 42.2 ± 4.97 38.81 ± 6.35 43.06 ± 3.73 39.91 ± 3.23
11 50.51 ± 2.52 50.47 ± 3.76 49.69 ± 4.78 51.15 ± 2.88 49.52 ± 2.26
12 57.3 ± 2.56 55.73 ± 3.47 57.28 ± 4.3 57.85 ± 2.35 55.81 ± 1.81
13 58.81 ± 3.34 58.49 ± 3.18 63.01 ± 4.55 62.39 ± 3.47 59.87 ± 2.12
14 64.41 ± 5.23 61.71 ± 3.6 61.83 ± 5.13 63.28 ± 2.71 63.2 ± 3.32
15 65.55 ± 3.96 68.26 ± 3.78 68.67 ± 4.47 68.82 ± 3.4 63.9 ± 3.3

Data shown as percent of baseline pupil area (average ± SEM).