Accommodation and Binocular Vision in Children with Myopic Anisometropia

Table 2

Comparison of accommodation and binocular vison parameters among three groups.

Parameters	Isometropia	Low anisometropia	High anisometropia	F/H
Distance heterophoria (^∆)	−1.00 (−2.25, 0.50)	−1.50 (−3.50, −0.50)	−3.00 (−6.00, −1.00)^#	13.722	0.001
Near heterophoria (^∆)	−2.79 ± 5.88	−3.87 ± 5.88	−6.76 ± 7.17^#	3.683	0.028
NRA (D)	2.5 (2.25, 2.75)	2.5 (2.0, 2.75)	2.75 (2.5, 2.75)	3.197	0.202
PRA (D)	−3 (−3.75, −2.50)	−2.875 (−4.25, −1.75)	−2.25 (−3, −1.75)^#	6.636	0.036
AR (D)	0 (0, 0.25)	0 (0, 0.25)	0.25 (0, 0.5)^#	10.45	0.005
AMP (D)	16 (13.5, 16.5)	13.75 (11.1, 16)^#	13.5 (12.5, 14.6)^#	14.246	0.001
Average age-expected AMP (D)	15.2 (15.2, 15.8)	15.05 (14.6, 15.5)	14.9 (14, 15.5)	5.11	0.078
Differences (D)	0.2 (−2, 1.15)	−1.15 (−4.1, 0.7)^#	−1.5 (−2.3, −0.8)^#	11.811	0.003
AC/A ratio (^∆/D)	4 (3, 5)	4 (3, 5)	3 (2, 4)^#	9.717	0.008
Near stereopsis (log)	1.51 (1.30, 1.65)	1.70 (1.40, 2.00)^#	1.80 (1.80, 2.20)^#	30.661	<0.001

NRA: negative relative accommodation; PRA: positive relative accommodation; AR: accommodative response; AMP: amplitude of accommodation; the average age-related AMP: 18.5 − 0.3  age; Differences: AMP measured value minus average; AC/A: accommodative convergence over accommodation; univariate ANOVA was used for near heterophoria, and the Kruskal–Wallis H was for other values; compared with the control group, ^#; compared with the low anisometropia group, .