The Severity of Retinopathy in the Extremely Premature Infants

Table 1

Association of retinopathy stages with prematurity.

	≤27 weeks with ROP; ()	>27 weeks with ROP; ()
Stage  1 ROP	0	2
Stage  2 ROP	1	4
Stage  3 ROP
(I) Mild	1	0
(II) Moderate	2
(III) Severe	8

ROP: retinopathy of prematurity;e: eyes.