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What is Extra retinal fibrovascular proliferation at ridge between normal and avascular retina is which grade of ROP? and explain in detail?
ROP 3 REF: khurana 4th ed p. 265 Stages of ROP STAGE 1: Demarcation line STAGE 2: Demarcation ridge STAGE 3: Extra retinal proliferation and neovascularization STAGE 4: sub-retinal detachment including macula STAGE 5: Total retinal detachment