Table 1 ROP staging, zones, and disease course of studied patients
Pretreatment stage (percentage to total) | Total | No regression/total | Recurrence/regressed | Complete vascularization/regressed without recurrence | ||||
|---|---|---|---|---|---|---|---|---|
1.00 | 2.00 | 3.00 | ||||||
Pretreatment zone | 1 | 2 (0.2%) | 8 (0.9%) | 177 (20.4%) | 187 (21.6%) | 18/187 (9.6%) | 13/169 (7.6%) | 112/156 (71.7%) |
2 | 0 | 25 (2.8%) | 653 (75.5%) | 678 (78.3%) | 17/678 (2.5%) | 20/661 (3.0%) | 506/641 (78.9%) | |
Total | 2 (0.2%) | 33 (3.8%) | 830 (95.9%) | 865 (100%) | 35/865 (4.0%) | 33/830 (3.9%) | 608/797 (76.2%) | |