Table 2. Characteristics of retinal vascularization of ROP eyes with IVR at initial treatment.
| Variable | Peripheral avascular zone |
Additional laser treatment (n=12) | Additional surgery treatment (n=3) | Total (n=201) | ||
| Zone II (n=16) | Zone III (n=44) | Completed vascularization (n=126) | ||||
| BW (g) | 1100±347.1 | 1185.45±348.5 | 1274.38±348.1 | 1216.67±249.4 | 1226.67±316.5 | 1236.87±343.99 |
| GA (wk) | 28.9±2.2 | 28.5±1.7 | 29.2±2.9 | 29.6±2.4 | 29.7±2.8 | 29±3.2 |
| Severity of ROP | ||||||
| Zone I (n) | 1 | 3 | 6 | 3 | 0 | 13 |
| APROP (n) | 5 | 6 | 9 | 5 | 1 | 26 |
| Zone II (n) | 10 | 35 | 111 | 4 | 2 | 162 |
| Repeated injections (n) | 9 | 18 | 38 | 7 | 1 | 73 |
| RBC (×109/L) | 3.53±0.44 | 3.59±0.74 | 3.46±0.64 | 3.51±0.72 | 3.19±0.43 | 3.50±0.65 |
| PLT (×109/L) | 295.63±127.38 | 309.64±106.29 | 323.52±110.30 | 310.75±80.31 | 377.67±88.59 | 318.31±108.69 |
| HGB (g/L) | 109.25±15.25 | 107.14±19.89 | 103.95±19.77 | 110.83±16.47 | 98.33±11.93 | 105.40±19.21 |
BW: Birth weight; GA: Gestational age; APROP: Aggressive posterior retinopathy of prematurity; RBC: Red blood cell; PLT: Platelet; HGB: Hemoglobin.
mean±SD