Table 1.

Characteristics of patients

	Mean ± SD (range)	Median
Age at surgery (years)	7.09 ± 3.80 (3 ~ 18)	6
male/female	23/11
Equivalent spherical diopter (D, right)	−0.72 ± 1.29 (0 ~ − 4.00)	0
Equivalent spherical diopter (D, left)	−0.60 ± 1.20 (0 ~ − 4.00)	0
BCVA# (LogMAR2*, right)	0.08 ± 0.13 (0.30 ~ 0)	0
BCVA (LogMAR, left)	0.09 ± 0.17 (0.30 ~ 0)	0
Deviation at distance (PD)	−26.09 ± 6.5 (−15 ~ −35)	−25
Deviation at near (PD)	−37.21 ± 6.30(− 25 ~ −45)	−40
N-D difference (PD)	11.12 ± 2.06 (10 ~ 15)	10
Follow-up period (month)	15.01 ± 11.19 (6–37)	7

#BCVA: best corrected visual acuity.

*LogMAR: logarithmic minimum angle of resolution