The diurnal variation of corneal topography and aberrations.

  title={The diurnal variation of corneal topography and aberrations.},
  author={Scott A Read and Michael J. Collins and Leo G. Carney},
  volume={24 6},
PURPOSE To investigate if diurnal variation occurs in corneal topography. METHODS Seventeen young subjects had corneal topography measured 3 times a day (around 9 AM, 1 PM, and 5 PM) on 3 days of the week (Monday, Tuesday, and Friday). Corneal tangential and refractive power were analyzed. To investigate diurnal variation in corneal aberrations, the corneal height data were converted into corneal wavefront error and expressed as Zernike wavefront coefficients. RESULTS A significant diurnal… CONTINUE READING