The age-related changes in different types of isorule astigmatism, including WW, AA, and OO, were similar to the findings of previous studies, such that with-the-rule astigmatism had a decreasing trend, against-the-rule astigmatism had an increasing trend, and oblique astigmatism had a relatively steady trend. 14 , 27 , 32 , 33 Since this is not a new finding and is addressed in most previous studies, we found no need to discuss it further.
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Enantiomorphism and rule similarity in the astigmatism axes of fellow eyes: A population-based study.
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