A keratometer


A keratometer is a medical instrument that eye care professionals use to measure the curvature and reflection of the anterior surface of the cornea. A keratometer, also sometimes called an ophthalmometer, is primarily used to diagnose the presence of astigmatism and to determine the degree and treatment of astigmatism. Astigmatism is a condition of the eye in which the cornea or lens is misshapen and can result in vision problems.[1] It was invented by the German physiologist Hermann von Helmholtz in 1880, although an earlier model was developed in 1796 by Jesse Ramsden and Everard Home.


  • Marco
  • Potec PRK 5000
  • Reichert



  1. What is a Keratometer? WiseGeek. 2011. [1]


See also

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