Factors That Influence Refractive Changes in the First Year of Myopia Development in Premature Infants

Table 6

SE of the presence or absence of serious ROP.

Postmenstrual age	No severe ROP		Severe ROP		t
		SE (D)		SE (D)
36 w	425	+1.12 ± 2.12	12	+0.96 ± 1.59	0.26	0.795
38 w	383	+1.91 ± 1.88	28	+1.36 ± 1.91	1.49	0.137
40 w	359	+2.81 ± 1.74	23	+2.27 ± 1.54	1.45	0.148
42 w	195	+3.32 ± 1.81	18	+3.00 ± 1.38	0.73	0.466
44 w	118	+3.60 ± 1.64	26	+3.55 ± 1.35	0.14	0.885
46 w	121	+3.66 ± 1.81	16	+3.36 ± 1.41	0.64	0.524
48 w	83	+3.47 ± 1.46	19	+3.08 ± 1.40	1.06	0.292
3 m	127	+3.11 ± 1.53	19	+2.93 ± 2.02	0.46	0.648
6 m	155	+2.32 ± 1.71	44	+2.05 ± 1.67	0.93	0.353
9 m	53	+1.37 ± 1.23	16	+0.78 ± 0.95	1.76	0.082
12 m	46	+0.83 ± 1.04	21	+0.21 ± 1.17	2.17	0.033

ROP, retinopathy of prematurity; SE, spherical equivalent; , weeks; m, months; , number of eyes; D, diopter.