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. Author manuscript; available in PMC: 2020 May 4.
Published in final edited form as: Vision Res. 2017 Feb 17;133:1–11. doi: 10.1016/j.visres.2017.01.002

Table 1.

Mean and standard deviation of the three age group attributes.

Group Age (yrs) Gender F = Female M = Male Stereopsis (sec arc) Amplitude of accommodation (D = Diopters) Near point of Convergence (cm) Mean right eye sphere (D = Diopters) Mean left eye sphere (D = Diopters)
Young 23.5 ± Z50 4 F and 6 M 21.8 ±3.5 11.1 ± 1.8 5.0 ± 2.0 −0.05 ± 0.98 −0.13 ±0.94
Mid-Aged 46.1 ±2.60 16 F and 12 M 35.2 ±15.7 3.2 ± 1.9 59 ±22 −1.45 ± 2.22 −1.02 ±1.93
Older 61.0 ±6.13 5 F and 6 M 46 ±21.9 1.4 + 0.8 6.4 ± 32 0.30 ± 2.60 0.28 ± 2.63