<prompt> Excessive O2 concentration in Neonates causingRetrolental fibroplasiasRespiratory distress syndromeHyaline membrane diseaseAnaemic retinopathy  <response>: Retrolental fibroplasia 264-KHRetinopathy of prematurity term coined for the disease retrolental fibroplasia It is a bilateral proliferative retinopathy, occurring in premature infants weighting less than 1300 gm exposed to high concentration of oxygen during the first 10 days of life. Premature infants should not be placed in incubator with an O2 concentration of more than 30 and efforts should be made to avoid infection and attacks of apnoea. 