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. 2021 Oct 12;65(3):115–126. doi: 10.3345/cep.2021.00773

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Copyright © 2022 by The Korean Pediatric Society

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 2. — Fundus photos of stages 1–4 retinopathy of prematurity (ROP). (A) In stage 1, a demarcation line (arrow) between a normally vascularized retina and the peripheral avascular retina is shown. (B) In stage 2, the demarcation line becomes an elevated ridge (arrow). (C) In stage 3, extraretinal fibrovascular proliferation appears (arrow). (D) Partial retinal detachment (arrow) in the nasal side of the fundus and preretinal hemorrhage (dashed arrow) are shown. (Fundus photos courtesy of Dr. Sang Jin Kim).