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

Table 3

SE of different BW.

Postmenstrual age	BW ≤ 1500 g		BW > 1500 g		t
		SE (D)		SE (D)
36 w	240	+1.18 ± 2.12	197	+1.24 ± 2.19	1.14	0.257
38 w	231	+1.75 ± 1.89	180	+2.04 ± 1.88	1.57	0.117
40 w	172	+2.65 ± 1.73	210	+2.78 ± 1.72	0.08	0.937
42 w	108	+3.41 ± 1.97	105	+3.31 ± 1.82	0.12	0.902
44 w	81	+3.75 ± 1.56	63	+3.70 ± 1.81	0.68	0.500
46 w	73	+3.82 ± 1.74	64	+3.91 ± 1.84	1.84	0.069
48 w	63	+3.32 ± 1.42	39	+3.52 ± 1.50	0.55	0.676
3 m	78	+3.19 ± 1.60	68	+3.02 ± 1.65	0.50	0.620
6 m	119	+2.17 ± 1.58	80	+2.38 ± 1.81	0.76	0.445
9 m	36	+0.92 ± 0.99	33	+1.00 ± 1.20	1.60	0.116
12 m	37	+0.31 ± 0.96	30	+0.78 ± 0.98	0.97	0.335

BW, birth weight; SE, spherical equivalent; , weeks; m, months; , number of eyes; D, diopter.