Table 1.

Distributions of spherical equivalent M before and after cycloplegia, stratified by age and gender

	Cycloplegia	Mean (D)	Standard error	Standard deviation (D)	Skewness	Kurtosis	IQR (D)
Overall
	Before	−1.68	0.13	2.00	0.22	3.99	2.06
	After	−1.16	0.14	2.17	0.23	2.38	2.10
Age (years)
4–6	Before	0.10	0.17	0.89	−0.34	−0.97	1.68
	After	0.97	0.21	1.11	−0.49	−0.45	1.31
7–11	Before	−1.52	0.18	1.98	1.11	6.09	1.90
	After	−0.97	0.19	2.10	1.04	3.62	2.00
12–16	Before	−2.65	0.21	1.79	−1.14	1.59	2.19
	After	−2.31	0.22	1.86	−1.13	1.61	2.26
Gender
Boys	Before	−1.69	0.18	1.79	−0.45	1.27	2.18
	After	−1.29	0.20	1.99	−0.20	0.76	2.53
Girls	Before	−1.68	0.19	2.16	0.51	4.78	2.00
	After	−1.07	0.20	2.30	0.41	2.96	1.88

D: dioptres, IQR: interquartile range.