Effect of the internal optics on the outcome of custom-LASIK in an eye model

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

Abstract

The purpose of this study was to evaluate if changes in the aberration-contribution of the internal optics of the eye have a significant effect on the outcome of wavefront-guided corneal reshaping. Methods. The Navarro-Escudero eye model was simulated using optical analysis software. The eye was rendered myopic by shifting the plane of the retina. Custom-LASIK was simulated by changing the radius of curvature and asphericity of the anterior comeal surface of the eye model. The radius of curvature was adjusted to provide a retinal conjugate at infinity. Three approaches were used to determine the postoperative comeal asphericity: minimizing third-order spherical aberration, minimizing third-order coma, and maximizing the Strehl ratio. The aberration contribution of the anterior corneal surface and internal optics was calculated before and after each simulated customized correction. Results. For a 5.2mm diameter pupil, the contribution of the anterior corneal surface to third-order spherical aberration and coma (in micrometers) was 2.22 and 2.49 preop, -0.36 and 2.83 postop when spherical aberration is minimized, 5.88 and 1.10 postop when coma is minimized, and -0.63 and 2.91 postop when Strehl ratio is maximized. The contribution of the internal optics of the eye to spherical aberration and coma for the same four conditions was: 0.43 and -1.13, 0.37 and -1.10, 0.37 and -1.10 and 0.37 and -1.10, respectively. Conclusion. In the model eye, the contribution of the internal optics of the eye to the change in the ocular aberration state is negligible.

Original languageEnglish (US)
Title of host publicationProgress in Biomedical Optics and Imaging - Proceedings of SPIE
EditorsF. Manns, P.G. Soederberg, A. Ho
Pages201-205
Number of pages5
Volume5
Edition3
DOIs
StatePublished - 2004
EventOphthalmic Technologies XIV - San Jose, CA, United States
Duration: Jan 24 2004Jan 27 2004

Other

OtherOphthalmic Technologies XIV
CountryUnited States
CitySan Jose, CA
Period1/24/041/27/04

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Aberrations
Optics
Wavefronts

Keywords

  • Corneal asphericity
  • Ocular aberrations
  • Refractive surgery
  • Wavefront

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Manns, F., Ho, A., & Parel, J-M. A. (2004). Effect of the internal optics on the outcome of custom-LASIK in an eye model. In F. Manns, P. G. Soederberg, & A. Ho (Eds.), Progress in Biomedical Optics and Imaging - Proceedings of SPIE (3 ed., Vol. 5, pp. 201-205). [5314-38] https://doi.org/10.1117/12.540883

Effect of the internal optics on the outcome of custom-LASIK in an eye model. / Manns, Fabrice; Ho, Arthur; Parel, Jean-Marie A.

Progress in Biomedical Optics and Imaging - Proceedings of SPIE. ed. / F. Manns; P.G. Soederberg; A. Ho. Vol. 5 3. ed. 2004. p. 201-205 5314-38.

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

Manns, F, Ho, A & Parel, J-MA 2004, Effect of the internal optics on the outcome of custom-LASIK in an eye model. in F Manns, PG Soederberg & A Ho (eds), Progress in Biomedical Optics and Imaging - Proceedings of SPIE. 3 edn, vol. 5, 5314-38, pp. 201-205, Ophthalmic Technologies XIV, San Jose, CA, United States, 1/24/04. https://doi.org/10.1117/12.540883
Manns F, Ho A, Parel J-MA. Effect of the internal optics on the outcome of custom-LASIK in an eye model. In Manns F, Soederberg PG, Ho A, editors, Progress in Biomedical Optics and Imaging - Proceedings of SPIE. 3 ed. Vol. 5. 2004. p. 201-205. 5314-38 https://doi.org/10.1117/12.540883
Manns, Fabrice ; Ho, Arthur ; Parel, Jean-Marie A. / Effect of the internal optics on the outcome of custom-LASIK in an eye model. Progress in Biomedical Optics and Imaging - Proceedings of SPIE. editor / F. Manns ; P.G. Soederberg ; A. Ho. Vol. 5 3. ed. 2004. pp. 201-205
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