Ocular Aberrations Before and After Laser in Situ Keratomileusis (LASIK)

Mark J. Iacobucci, Ronald R. Krueger, George H. Pettit

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

PURPOSE: To define the magnitude of optical aberrations before and after LASIK. METHODS: A Custom Cornea® wavefront sensor (CCWS) was used to analyze 113 eyes prior to LASIK. 105 of these eyes then had LASIK surgery in two consecutive cohort groups with a nomogram change in between (71 eyes and 34 eyes respectively). Wavefront sensing was performed postoperatively at one week, one month, and three months. The total wavefront Root Mean Square (RMS) error and co-efficient amplitudes were determined. RESULTS: The dominant preoperative wavefront aberrations were spherical refractive error and astigmatism. The higher order aberrations were of lower magnitude with preoperative coma being dominant (0 - 0.0005μ RMS). Spherical equivalent had the next highest magnitude ranging from -0.0001μ to -0.0003μ RMS. Postoperative RMS error was found to be significantly higher for hyperopes than myopes (p<0.05). CONCLUSION: Wavefront sensing demonstrates an increase in higher order aberrations after LASIK with greater total RMS values seen in hyperopic versus myopic treatments. Change in refractive nomogram improves the RMS outcome, making wavefront sensing a potentially useful tool in nomogram development.

Original languageEnglish (US)
Title of host publicationVision Science and its Applications, VSIA 2001
PublisherOptica Publishing Group (formerly OSA)
Pages188-191
Number of pages4
ISBN (Electronic)1557526699
StatePublished - 2001
Externally publishedYes
EventVision Science and its Applications, VSIA 2001 - Monterey, United States
Duration: Feb 9 2001 → …

Publication series

NameOptics InfoBase Conference Papers

Conference

ConferenceVision Science and its Applications, VSIA 2001
Country/TerritoryUnited States
CityMonterey
Period2/9/01 → …

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Mechanics of Materials

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