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Contact Lens Corneal Topography

Corneal Topography

Corneal topography provides the most detailed information about the curvature of the cornea. The computer generates a color map from the data. This information is useful to evaluate and correct astigmatism, monitor corneal disease and detect irregularities in the corneal shape. Corneal topography is very useful for fitting contact lenses, refractive surgery, and corneal reshaping therapy.

Important clinical functions of corneal topography include the following

  • earlier and more accurate diagnosis of corneal disease
  • assist in determining treatment plans
  • preoperative surgical risk assessment
  • postoperative surgical management

Corneal topography may be reasonable and medically necessary in the following clinical situations

  • corneal ulcers
  • keratoconus
  • corneal edema
  • corneal dystrophy
  • corneal degeneration
  • pterygium causing irregular astigmatism
  • contact lens-induced corneal warpage
  • monocular diplopia
  • unexplained vision loss thought to be due to irregular astigmatism