General Information
- Prematurity, especially ≤30 weeks of gestation.
- Birth weight ≤1,500 g (3 lb, 5 oz).
- Use of supplemental oxygen, neonatal sepsis, hypoxemia, hypercarbia, failure to thrive, coexisting illness, Caucasian race, and male sex.
- Risk factors mentioned above, when present concurrently, have an additive effect on the risk for development of ROP.