<prompt> Retrolental fibroplasia has association with?Prolonged labourIntrauterine infectionMeconium aspirationLow bih weight  <response>: Ans. is d i.e., Low bih weight Retrolental Fibroplasia Retinopathy of prematurity Previously called as retrolental fibroplasia is a characterized by abnormal proliferation of small retinal blood vessels due to a variety of causes. The complication is related to high oxygen tension in the aerial blood rather than the concentration of oxygen in the inspired air. o The condition is limited to preterm babies with a bih weight of less than 1500 gm or gestational age of less than 32 weeks. Retrolental fibroplasia retinopathy of prematurity is generally noted some weeks after bih in premature infants who have been given high concentration of oxygen, and is usually confined to those under 1.7 Kg in weight at bih. 