The infant is predisposed to phase 1 ROP ... [19] Stage 1 A line of demarcation between the normal retina nearer the optic nerve and the non-vascularized retina peripherally. Stage 2 A ridge ...
The National Eye Institute in 1999 sponsored a multicenter ... any stage ROP that was less than threshold Zone II, Stage 2 ROP with plus disease Zone II, Stage 3 ROP without plus disease Zone ...
Most use the International Classification of Retinopathy of Prematurity system with five stages progressing from a temporal retinal demarcation line in stage 1 ... seen by other eye care ...
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