Spontaneous resolution of stage 4B retinopathy of prematurity.

An unfavorable outcome occurs in 31% of cases of treated severe threshold retinopathy of prematurity (ROP) and includes a retinal detachment of the posterior pole. Early treatment with laser of high risk prethreshold or type 1 ROP has significantly reduced this complication. However, despite prompt laser treatment, retinal detachments continue to be seen. Treatment of tractional partial retinal detachments involving the posterior pole (stage 4B ROP) is surgical. Successful reattachment of stage 4B ROP with a lens-sparing vitrectomy is high. The authors describe an infant who had spontaneous reattachment after stage 4B ROP.