Three-dimensional ray tracing for refractive correction of human eye ametropies

J. A. Jimenez-Hernandez; G. Diaz-Gonzalez; F. Trujillo-Romero; M. D. Iturbe-Castillo; R. Juarez-Salazar; A. Santiago-Alvarado

doi:10.1117/12.2238415

28 September 2016 Three-dimensional ray tracing for refractive correction of human eye ametropies

J. A. Jimenez-Hernandez, G. Diaz-Gonzalez, F. Trujillo-Romero, M. D. Iturbe-Castillo, R. Juarez-Salazar, A. Santiago-Alvarado

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Proceedings Volume 9947, Current Developments in Lens Design and Optical Engineering XVII; 99471F (2016) https://doi.org/10.1117/12.2238415
Event: SPIE Optical Engineering + Applications, 2016, San Diego, California, United States

Abstract

Ametropies of the human eye, are refractive defects hampering the correct imaging on the retina. The most common ways to correct them is by means of spectacles, contact lenses, and modern methods as laser surgery. However, in any case it is very important to identify the ametropia grade for designing the optimum correction action. In the case of laser surgery, it is necessary to define a new shape of the cornea in order to obtain the wanted refractive correction. Therefore, a computational tool to calculate the focal length of the optical system of the eye versus variations on its geometrical parameters is required. Additionally, a clear and understandable visualization of the evaluation process is desirable. In this work, a model of the human eye based on geometrical optics principles is presented. Simulations of light rays coming from a punctual source at six meter from the cornea are shown. We perform a ray-tracing in three dimensions in order to visualize the focusing regions and estimate the power of the optical system. The common parameters of ametropies can be easily modified and analyzed in the simulation by an intuitive graphic user interface.

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J. A. Jimenez-Hernandez, G. Diaz-Gonzalez, F. Trujillo-Romero, M. D. Iturbe-Castillo, R. Juarez-Salazar, and A. Santiago-Alvarado "Three-dimensional ray tracing for refractive correction of human eye ametropies", Proc. SPIE 9947, Current Developments in Lens Design and Optical Engineering XVII, 99471F (28 September 2016); https://doi.org/10.1117/12.2238415

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KEYWORDS

Eye

Retina

Cornea

Visualization

Ray tracing

Monochromatic aberrations

Eye models

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