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

Table 5

SE of the presence or absence of ROP.

Postmenstrual age	No ROP		With ROP		t
		SE (D)		SE (D)
36 w	296	+1.18 ± 2.21	141	+0.97 ± 1.84	0.98	0.327
38 w	284	+1.96 ± 1.96	127	+1.70 ± 1.72	1.29	0.199
40 w	283	+2.87 ± 1.75	99	+2.51 ± 1.65	1.78	0.075
42 w	150	+3.38 ± 1.86	63	+3.07 ± 1.56	1.17	0.244
44 w	72	+3.85 ± 1.69	72	+3.34 ± 1.45	1.93	0.056
46 w	80	+3.83 ± 1.78	57	+3.33 ± 1.71	1.63	0.105
48 w	47	+3.52 ± 1.38	55	+3.28 ± 1.51	0.83	0.411
3 m	80	+3.08 ± 1.52	66	+3.09 ± 1.70	0.04	0.970
6 m	97	+2.22 ± 1.71	102	+2.29 ± 1.70	0.28	0.779
9 m	45	+1.31 ± 1.16	24	+1.10 ± 1.26	0.67	0.505
12 m	36	+0.85 ± 1.04	31	+0.38 ± 1.16	1.75	0.084

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