Baseline parameters derived from image analysis algorithm
| Mean | Minimum | 25th percentile | Median | 75th percentile | Maximum | P value | |
| Retinal height at centre of hole (μm) | 366 | 223 | 333 | 365 | 396 | 488 | 0.78 |
| Minimum dimension of MA (μm) | 357 | 110 | 247 | 353 | 440 | 871 | 0.00017 |
| Maximum dimension of MA (μm) | 412 | 147 | 302 | 381 | 490 | 927 | 0.0031 |
| Height of centre of MA above RPE (μm) | 189 | 50.3 | 136 | 200 | 229 | 342 | 0.43 |
| Difference between maxima and minima of MA (μm) | 54.9 | 4.71 | 30.8 | 48.8 | 76.1 | 144 | 0.0011 |
| Minima of BA (μm) | 716 | 148 | 585 | 727 | 876 | 1410 | 0.86 |
| Maxima of BA (μm) | 803 | 193 | 636 | 823 | 972 | 1470 | 0.68 |
| Difference between maxima and minima of BA (μm) | 87.1 | 15.3 | 54.2 | 79.7 | 108 | 267 | 0.00011 |
| Surface area (mm2) | 1.66 | 0.254 | 1.16 | 1.51 | 2.07 | 4.28 | 0.00022 |
| Volume (×10−3 mm3) | 0.74 | 0.07 | 0.43 | 0.65 | 0.95 | 2.36 | 7.4e-07 |
P value refers to the Shapiro-Wilk test for normality for each variable. Values less than 0.05 signify that the values are not normally distributed.
BA, base area; MA, minimum area; RPE, retinal pigment epithelium.