What question did this study set out to answer?

The research aims to formalize the Biological Theory of spherical error of refraction in statistical terms and assess its explanatory power.

A Statistical Analysis of the Biological Theory of Spherical Error of Refraction

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Statistical analysis shows the Biological Theory explains error dispersion in populations, suggesting a link with mean explanations.

The research aims to formalize the Biological Theory of spherical error of refraction in statistical terms and assess its explanatory power.
Put the Biological Theory into modern statistical notation
Analyzed the dispersion of spherical error distributions
Compared the Biological Theory with the Use‐Abuse Theory
The Biological Theory accounts for dispersion but not the mean of spherical error distributions
Mean spherical error is explained by the Use‐Abuse Theory
Both theories can be viewed as complementary despite lacking empirical evidence

Angle et al. (1979) studied this question.

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