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[Changes in corneal astigmatism with aging]

K Hayashi1, M Masumoto, S Fujino

  • 1Hayashi Eye Hospital, Fukuoka, Japan.

Nippon Ganka Gakkai Zasshi
|October 1, 1993
PubMed
Summary
This summary is machine-generated.

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Corneal astigmatism shifts from with-the-rule (WTR) to against-the-rule (ATR) with age. ATR becomes dominant in individuals over 80, with its cylindrical diopter increasing significantly.

Area of Science:

  • Ophthalmology
  • Optometry
  • Corneal Physiology

Context:

  • Age-related changes in corneal astigmatism are not fully understood.
  • Understanding these shifts is crucial for accurate refractive error correction.
  • Previous studies have not comprehensively analyzed astigmatism progression across all adult age groups.

Purpose:

  • To investigate the age-related changes in the prevalence and magnitude of corneal astigmatism.
  • To compare the trends of with-the-rule (WTR) and against-the-rule (ATR) astigmatism across different age demographics.
  • To analyze the changes in cylindrical diopter (CD) for both WTR and ATR astigmatism with advancing age.

Summary:

  • This study evaluated 1,660 eyes across six age groups (under 40 to over 80).

Related Experiment Videos

  • Younger individuals predominantly exhibited WTR astigmatism, which decreased with age.
  • ATR astigmatism prevalence and CD increased significantly in older age groups, becoming dominant over 80.

    • Impact:

    • Provides critical data on the natural progression of corneal astigmatism throughout the lifespan.
    • Informs clinical practice for refractive surgery and contact lens fitting in aging populations.
    • Highlights the need for age-specific considerations in diagnosing and managing astigmatism.