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Related Experiment Videos

Factors affecting corneal endothelial morphology.

Huan Sheng1, Mark A Bullimore

  • 1Ohio State University, College of Optometry, Columbus, OH, USA. shengh@chi.osu.edu

Cornea
|May 26, 2007
PubMed
Summary
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Age, race, and refractive error influence corneal endothelial cell characteristics. Contact lens wear effects on cell density may be confounded by age, while refractive error impacts hexagonal cell percentage.

Area of Science:

  • Ophthalmology
  • Corneal Science
  • Cell Biology

Background:

  • Corneal endothelial cells are crucial for maintaining corneal clarity.
  • Endothelial cell morphology can be assessed by cell density, coefficient of variation (polymegathism), and percentage of hexagonal cells (pleomorphism).
  • Factors influencing corneal endothelial cell characteristics are important for understanding ocular health and disease.

Purpose of the Study:

  • To investigate the impact of age, race, duration of contact lens wear, and degree of myopia on key corneal endothelial cell parameters.
  • To analyze the relationships between subject-specific factors and endothelial cell density, polymegathism, and pleomorphism.

Main Methods:

  • A cohort of 149 subjects with diverse ages, refractive errors, and contact lens histories were analyzed.

Related Experiment Videos

  • Specular microscopy (Konan) and specialized software (KSS-300) were used to capture and analyze corneal endothelial images.
  • Multiple regression analysis was employed to model the relationships between variables.

    • Main Results:

    • Endothelial cell density was significantly influenced by age and race.
    • Coefficient of variation was affected by years of contact lens wear, age, and their interaction.
    • Percentage of hexagonal cells was independently influenced by years of contact lens wear, age, and refractive error.

    Conclusions:

    • Corneal endothelial cell density, polymegathism, and pleomorphism are differentially affected by various factors.
    • The apparent effect of contact lens wear on cell density may be confounded by age.
    • Refractive error is associated with the percentage of hexagonal cells, highlighting the need to control for subject-specific factors in research.