Objective: Retinopathy of prematurity (ROP) is a complication seen in many very low birth weight infants. Severe ROP has been called a "marker" for severe disability. The purpose of this study was to evaluate the occurrence and severity of ROP among infants < or =1250 g birth weight treated in the Special Care Nursery at Women & Infants' Hospital over a period of 7 years from 1994 to 2000.
Study Design: This was a retrospective review of ROP data combined with neonatal follow-up data. Of the 1002 infants born with birth weights <1250 g, ophthalmologic data were available for 739 of 839 survivors. Analysis of variance and chi2 along with logistic regression were used to analyze outcomes.
Results: An increase in the overall occurrence of ROP was identified (40% to 54% linear trend, p=0.007). The occurrence of threshold ROP ranged from 2% to 5% (NS). Infants at greatest risk of ROP were those micropremies with birth weights <750 g (p<0.001).
Conclusion: Severe ROP continues to be a significant morbidity among infants <750 g.
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