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Br J Ophthalmol 86:985-987 doi:10.1136/bjo.86.9.985
  • Scientific correspondence

Quantifying relative afferent pupillary defects using a Sbisa bar

Table 2

Photometric data

Sbisa bar filter number Log of luminance NDF bar filter number Log of luminance
1 5.66 0.3 6.00
2 5.58 0.6 5.69
3 5.59 0.9 5.40
4 5.39 1.2 5.10
5 5.29 1.5 4.85
6 5.24 1.8 4.55
7 5.17 2.1 4.27
8 5.17 2.4 3.97
9 5.08 2.7 3.67
10 5.00 3.0 3.35
11 5.00
12 4.97
13 4.64
14 4.47
15 3.83
16 2.24
17 2.17

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