Measurement and Analysis of Central Corneal Thickness at Different Postnatal Stages in Chinese Premature Infants

Table 6

Mean CCT in the ROP subgroup and without the ROP subgroup at each PMA.

PMA	ROP				t
	Yes		No
	CCT (μm)	N	CCT (μm)	N
34 w	604.94 ± 52.08	100	602.13 ± 58.46	424	0.44	0.66
36 w	594.85 ± 57.45	154	589.40 ± 54.39	569	1.09	0.28
38 w	578.49 ± 50.49	144	582.78 ± 52.00	441	0.87	0.39
40 w	558.41 ± 44.18	123	565.04 ± 53.63	406	1.25	0.21
42 w	547.07 ± 45.19	81	553.50 ± 46.21	212	1.07	0.28
44 w	543.52 ± 48.84	68	551.37 ± 47.01	90	1.02	0.31
46 w	532.83 ± 44.67	57	540.33 ± 44.87	91	0.99	0.32
48 w	533.79 ± 36.86	58	542.26 ± 37.18	55	1.22	0.23
52 w	539.71 ± 41.11	66	526.76 ± 36.55	84	2.49	0.05
64 w	532.84 ± 44.58	57	520.86 ± 36.37	49	1.50	0.14
76 w	531.63 ± 38.24	30	523.80 ± 29.51	39	0.96	0.34
88 w	539.69 ± 32.11	32	529.70 ± 41.10	33	1.09	0.28

PMA: postmenstrual age; N: number of infants; CCT: central corneal thickness; ROP: retinopathy of prematurity.