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Related Experiment Videos

Changes in corneal wavefront aberrations with aging.

T Oshika1, S D Klyce, R A Applegate

  • 1Department of Ophthalmology, University of Tokyo School of Medicine, Japan.

Investigative Ophthalmology & Visual Science
|June 8, 1999
PubMed
Summary
This summary is machine-generated.

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Corneal comalike aberrations increase with age, indicating reduced corneal symmetry. Pupillary dilation significantly amplifies these aberrations, especially in older individuals, while spherical aberrations remain stable.

Area of Science:

  • Ophthalmology
  • Optometry
  • Corneal Physiology

Background:

  • Corneal wavefront aberrations are crucial for visual quality.
  • Understanding age-related changes in corneal optics is important for ophthalmic practice.

Purpose of the Study:

  • To investigate the relationship between corneal wavefront aberrations and aging in normal subjects.

Main Methods:

  • Videokeratography was used to evaluate 102 eyes from normal subjects.
  • Taylor and Zernike polynomials decomposed data to calculate monochromatic aberrations for 3-mm and 7-mm pupils.

Main Results:

  • Comalike aberrations significantly correlated with age for both pupil sizes.
  • Total aberrations and comalike aberrations increased with age for a 7-mm pupil.

Related Experiment Videos

  • Pupillary dilation amplified total aberrations, with a stronger effect in older individuals.

    • Conclusions:

    • Corneal comalike aberrations increase with age, suggesting decreased corneal symmetry.
    • Spherical-like aberrations show no significant age-related changes.
    • Pupillary dilation markedly increases wavefront aberrations, particularly in older subjects.