Calculation of the primary spherical aberration of an eye model using paraxial ray-tracing with matrix optics

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

8 Citations (Scopus)

Abstract

Purpose: The purpose of this study was to develop a technique to calculate the effects of laser corneal reshaping on the spherical aberration of a model eye. Methods: To model the myopic human eye, the Navarro eye model with aspheric surfaces was rendered myopic by shifting the position of the retina (axial myopia). The matrix method of ray-tracing was used to calculate an expression for the ray height and incidence angle at each optical surface of the eye before and after flattening of the anterior corneal surface. The contribution of each surface to the Seidel coefficient for spherical aberration, S I, was then calculated from the paraxial ray height and incidence angle at the surface. The Seidel coefficient S I was calculated for a 1 mm ray height for the preoperative myopic and postoperative corrected relaxed eye for corrections of myopia ranging from 1 to 10 D. Results: In eyes corrected for axial myopia, the primary spherical aberration of the eye (S I) was found to remain approximately equal to that of the emmetropic eye for corrections of up to 5 D. For corrections larger than 5D, the postoperative aberration significantly increased. Conclusions: Our model indicates that spherical corrections of high myopia (>5D) by laser corneal reshaping are expected to significantly increase the amount of primary spherical aberration of the eye.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsF. Manns, P.G. Soderberg, A. Ho
Pages57-65
Number of pages9
Volume4245
DOIs
StatePublished - 2001
EventOphthalmic Technologies XI - San Jose, CA, United States
Duration: Jan 20 2001Jan 21 2001

Other

OtherOphthalmic Technologies XI
CountryUnited States
CitySan Jose, CA
Period1/20/011/21/01

Fingerprint

Ray tracing
Aberrations
ray tracing
aberration
Optics
optics
myopia
matrices
rays
Lasers
incidence
retina
flattening
coefficients
matrix methods
lasers

Keywords

  • Eye model
  • LASIK
  • Matrix
  • Optics
  • Photorefractive keratectomy
  • Refractive surgery
  • Spherical aberration

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Manns, F., Ho, A., & Parel, J-M. A. (2001). Calculation of the primary spherical aberration of an eye model using paraxial ray-tracing with matrix optics. In F. Manns, P. G. Soderberg, & A. Ho (Eds.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 4245, pp. 57-65) https://doi.org/10.1117/12.429290

Calculation of the primary spherical aberration of an eye model using paraxial ray-tracing with matrix optics. / Manns, Fabrice; Ho, A.; Parel, Jean-Marie A.

Proceedings of SPIE - The International Society for Optical Engineering. ed. / F. Manns; P.G. Soderberg; A. Ho. Vol. 4245 2001. p. 57-65.

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

Manns, F, Ho, A & Parel, J-MA 2001, Calculation of the primary spherical aberration of an eye model using paraxial ray-tracing with matrix optics. in F Manns, PG Soderberg & A Ho (eds), Proceedings of SPIE - The International Society for Optical Engineering. vol. 4245, pp. 57-65, Ophthalmic Technologies XI, San Jose, CA, United States, 1/20/01. https://doi.org/10.1117/12.429290
Manns F, Ho A, Parel J-MA. Calculation of the primary spherical aberration of an eye model using paraxial ray-tracing with matrix optics. In Manns F, Soderberg PG, Ho A, editors, Proceedings of SPIE - The International Society for Optical Engineering. Vol. 4245. 2001. p. 57-65 https://doi.org/10.1117/12.429290
Manns, Fabrice ; Ho, A. ; Parel, Jean-Marie A. / Calculation of the primary spherical aberration of an eye model using paraxial ray-tracing with matrix optics. Proceedings of SPIE - The International Society for Optical Engineering. editor / F. Manns ; P.G. Soderberg ; A. Ho. Vol. 4245 2001. pp. 57-65
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