Variables

Mean (SD)

%

Age (years)

12.75 (1.30)

Mean spherical equivalent (MSE)

−2.17 (1.86)

Stereoacuity (second)

120.47 (183.63)

Gender

Male (n = 166)

49%

Female (n = 172)

51%

Refraction error

Myopia (n = 261)

78%

Hyperopia (n = 8)

2%

Emmetropia (n = 69)

20%

Head position (normal) (n = 293)

87%