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Related Experiment Videos

Age-related differences in normal corneal topography.

Habibe Topuz1, Murat Ozdemir, Adnan Cinal

  • 1Yuzuncu Yil University, School of Medicine, Department of Ophthalmology, Van, Turkey.

Ophthalmic Surgery, Lasers & Imaging : the Official Journal of the International Society for Imaging in the Eye
|August 13, 2004
PubMed
Summary

Corneal topography changes with age, showing increased steepness and a shift in astigmatism patterns. However, the overall amount of physiological corneal astigmatism remains consistent across different age groups.

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Area of Science:

  • Ophthalmology
  • Corneal Physiology
  • Biometry

Background:

  • Age-related changes in corneal topography are not fully understood.
  • Computerized corneal topography systems offer precise measurements for such studies.

Purpose of the Study:

  • To compare age-related differences in corneal topography.
  • To analyze changes in corneal power and astigmatism patterns with age.

Main Methods:

  • A randomized comparative study included 240 eyes from 120 healthy subjects.
  • Subjects were categorized into six age groups (5-10 to 51+ years).
  • Average corneal power, astigmatism, and topography maps were analyzed for each group.

Main Results:

  • Average corneal power significantly increased with age (P < .001).

Related Experiment Videos

  • Astigmatism patterns shifted from with-the-rule in younger subjects to oblique/against-the-rule in older subjects.
  • Corneal topography maps showed a transition from a vertical bow-tie to a round configuration with increasing age.

    • Conclusions:

    • The normal cornea exhibits age-related changes in steepness and astigmatism orientation.
    • The total amount of physiological corneal astigmatism does not appear to change significantly with age.