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. 2012 Jun 29;53(7):4069–4075. doi: 10.1167/iovs.12-9438

Table 2. .

Distribution, Mean Volume and Volume Standard Deviation of Included SD-OCT Scans for Each Grade of Papilledema Severity Using the Frisén Scale in 71 Eyes


Frisén Scale

Number of Eyes

Mean Volume

Standard Deviation
0 5 11.36 0.560
1 25 12.53 1.214
2 28 14.42 2.113
3 8 17.48 2.629
4 5 21.81 3.159
Spearman's rank correlation coefficient r = 0.737
Significance level P < 0.0001
95% confidence interval (0.608, 0.828)
Total valid eyes 71