ROP retina zone | ROP stage 1 | ROP stage 2 | ROP stage 3 | ROP stage 4 | ROP stage 5 | AP | Total ROP cases |
I (% of total) | 0 (0) | 3 (0.5) | 2 (0.3) | 0 (0) | 1 (0.2) | 7 (1.2) | 13 (2.2) |
II (% of total) | 46 (8.4) | 125 (21.2) | 42 (7.2) | 1 (0.2) | 0 (0) | 2 (0.3) | 216 (36.9) |
III (% of total) | 206 (34.7) | 137 (23.4) | 13 (2.2) | 0 (0) | 0 (0) | 0 (0) | 356 (60.9) |
Grand total | 252 (43.1) | 265 (45.3) | 57 (9.7) | 1 (0.2) | 1 (0.2) | 9 (1.5) | 585 (100) |
ROP, retinopathy of prematurity; AP, aggressive posterior retinal disease.