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What is Retinopathy of Prematurity (ROP) screening is done in the following babies and explain in detail?
Retinopathy of Prematurity (ROP) Screening is done in

Preterm babies < 32 weeks of gestation
Babies with birth weight < 1.5 kg
Preterm babies of  32 - 34 weeks of gestation
	Babies with birth weight 1.5 - 2 kg

Preterm babies of 32-34 weeks and babies with birth weight 1.5-2kg should have had bad neonatal course like:
a) Ventilatory support
b) O2 supply for > 24 hours
c) Ionotrope support for condition like shock
d) Blood transfusion
e) Culture positive sepris.