Table 2.

Mean values, SD and 95% CI of distance visual acuity, crowding and mean deviation (MD) of the visual fields and number and fraction of crowding ratio ≥1.5 in the better and worse eyes of prematurely born individuals and those born at term

		VA (logMAR)		CR	CR ≥1.5		MD
		Mean (SD)		Mean (SD)	N		Mean (SD)
		95% CI		95% CI	Fraction		95% CI
Better eye
Control subjects	N=44	−0.14 (0.07)	N=44	1.20 (0.26)	4	N=43	−0.80 (1.03)
		−0.16 to −0.12		1.13 to 1.28	0.09		−1.12 to −0.48
Prematures	N=59	−0.08 (0.11)	N=59	1.26 (0.30)	16	N=56	−1.09 (1.13)
		−0.11 to −0.05		1.18 to 1.34	0.27		−1.39 to −0.79
No ROP	N=36	−0.10 (0.09)	N=36	1.27 (0.25)	9	N=35	−0.93 (0.92)
		−0.13 to −0.07		1.18 to 1.35	0.25		−1.25 to −0.62
Untreated ROP	N=10	−0.08 (0.10)	N=10	1.38 (0.30)	4	N=9	−1.10 (1.61)
		−0.15 to −0.01		1.16 to 1.59	0.40		−2.33 to 0.14
Treated ROP	N=13	−0.02 (0.14)	N=13	1.16 (0.40)	3	N=12	−1.54 (1.26)
		−0.11 to 0.06		0.91 to 1.40	0.23		−2.34 to −0.73
Worse eye
Control subjects	N=44	−0.09 (0.08)	N=44	1.32 (0.27)	14	N=43	−0.92 (1.16)
		−0.12 to −0.07		1.23 to 1.40	0.32		−1.28 to −0.57
Prematures	N=59	0.03 (0.27)	N=57	1.30 (0.30)	16	N=57	−1.32 (1.19)
		−0.04 to 0.10		1.22 to 1.38	0.28		−1.63 to −1.00
No ROP	N=34	0.01 (0.30)	N=33	1.33 (0.31)	8	N=33	−1.34 (1.15)
		−0.10 to 0.11		1.22 to 1.44	0.24		−1.75 to −0.94
Untreated ROP	N=12	0.01 (0.08)	N=12	1.28 (0.27)	4	N=12	−1.07 (1.43)
		−0.04 to 0.06		1.11 to 1.45	0.33		−1.98 to −0.17
Treated ROP	N=13	0.09 (0.29)	N=12	1.25 (0.30)	4	N=12	−1.49 (1.12)
		−0.09 to 0.26		1.06 to 1.44	0.33		−2.20 to −0.78

CR, crowding ratio; N, number; ROP, retinopathy of prematurity; VA, visual acuity.