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A new keratometer.

W A Douthwaite1

  • 1School of Optometry, Bradford University, West Yorkshire, England.

American Journal of Optometry and Physiological Optics
|September 1, 1987
PubMed
Summary
This summary is machine-generated.

This study introduces a novel keratometer design for measuring corneal curvature. The instrument simplifies measurements and allows for peripheral cornea radius assessment.

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Area of Science:

  • Ophthalmology
  • Optical Engineering
  • Biomedical Devices

Background:

  • Accurate measurement of corneal curvature is crucial for refractive error correction and contact lens fitting.
  • Existing keratometry methods may have limitations in simplicity, compactness, or peripheral measurement capabilities.

Purpose of the Study:

  • To describe a new keratometer design utilizing Drysdale's method.
  • To develop a compact and simple instrument for measuring the radius of curvature of curved surfaces, including the peripheral cornea.

Main Methods:

  • The design employs Drysdale's method for radius determination.
  • A spherocylindrical lens system enables simultaneous observation of surface and center of curvature images.

Main Results:

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  • The described keratometer is simple and compact in design.
  • The instrument is capable of measuring the radius of curvature of the peripheral cornea.

Conclusions:

  • The novel keratometer design offers a simplified and compact solution for measuring corneal curvature.
  • This instrument expands measurement capabilities to include the peripheral cornea, potentially improving ophthalmic diagnostics and treatments.