Analyzes changes in astigmatism types over age in a diverse population, suggesting significant correlations.
The age trends of total, corneal, and internal astigmatism are studied in 621 patients taken over a cross‐section of the population. The data show that total and corneal astigmatism change significantly with age, and that there is a high correlation between total and corneal astigmatism.
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John Anstice (1971) studied this question.
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