| Case Group
SE Subgroup (Diopters) | Group 1 (n = 31) | Group 2 (n = 163) | ||||
| n | % to total of group 1 | % to total of SE subgroup | n | % to total of group 2 | % to total of SE subgroup | |
| ≥0.00 | 5 | 16.1 | 6.7 | 70 | 43 | 93.3 |
| −0.25 to −2.00 | 6 | 19.4 | 14.3 | 36 | 22 | 85.7 |
| −2.25 to −4.00 | 6 | 19.4 | 18.7 | 26 | 16 | 81.3 |
| −4.25 to −6.00 | 3 | 9.7 | 20 | 12 | 7.3 | 80 |
| −6.25 to −8.00 | 3 | 9.7 | 37.5 | 5 | 3 | 62.5 |
| −8.25 to −10.00 | 3 | 9.7 | 42.9 | 4 | 2.5 | 57.1 |
| −10.25 to −12.00 | 2 | 6.5 | 50 | 2 | 1.2 | 50 |
| ≥12.25 | 3 | 9.7 | 27.3 | 8 | 5 | 72.7 |