Table 1.

 Profile and clinical characteristics of subjects in the control group

Control No	Sex	Age (years)	Right eye		Left eye
			Refraction (D)	VA	Refraction (D)	VA
1	F	20	Plano	−0.1	Plano	−0.1
2	M	26	Plano	−0.2	Plano	−0.2
3	F	27	Plano	−0.1	Plano	−0.1
4	M	31	Plano	−0.2	Plano	−0.2
5	F	37	−0.50 sphere	−0.2	−0.50/−0.25×025	−0.2
6	F	40	−2.75/−0.5×056	−0.1	−3.25/−0.75×014	0
7	M	43	Plano	−0.1	−0.50 sphere	0.1
8	M	47	+0.75/−0.75×176	−0.1	+1.00/−0.25×121	−0.1
9	F	50	Plano	−0.1	Plano	−0.1
			Add +2.00		Add +1.75
10	F	51	Plano	−0.1	Plano	−0.1
			Add +2.00		Add +2.00
11	F	53	+1.50/−0.50×094	−0.1	+1.50 sphere	−0.2
			Add +2.00		Add +2.00
12	M	55	Plano	−0.1	Plano	−0.1
			Add +2.00		Add +2.00
13	F	59	−0.75/−1.25×067	−0.1	−0.75	−0.1
14	M	66	Plano	+0.1	Plano	+0.1
			Add +3.00		Add +3.00
15	F	69	Plano	−0.1	Plano	0
			Add +2.75		Add +2.50
16	F	78	+0.50/−1.00×049	−0.1	−0.50/−2.00×074	−0.1
			Add +3.00		Add +3.00
Mean (SD)	47 (16.46)			−0.1 (0.07)		−0.1 (0.10)

VA, logMAR visual acuity.