Optical properties of ocular tissues in the near infrared region

Dhiraj K. Sardar; Raylon M. Yow; Guang-Yin Swanland; Robert J. Thomas; Andrew T. C. Tsin

doi:10.1117/12.643874

7 March 2006 Optical properties of ocular tissues in the near infrared region

Dhiraj K. Sardar, Raylon M. Yow, Guang-Yin Swanland, Robert J. Thomas, Andrew T. C. Tsin

Proceedings Volume 6138, Ophthalmic Technologies XVI; 613815 (2006) https://doi.org/10.1117/12.643874
Event: SPIE BiOS, 2006, San Jose, California, United States

Abstract

Near infrared characterization of optical properties of various tissue components of healthy human and bovine eyes has been performed. The indices of refraction (n) of these ocular tissues were determined using a Michelson interferometer. The total diffuse reflection (R_d) and total transmission (T_t) measurements have been taken for individual ocular tissue by using double-integrating spheres and infrared laser diodes. The Inverse Adding Doubling computational method based on the diffusion approximation and radiative transport theory is applied to the measured values of n, R_d, and T_t to calculate the optical absorption and scattering coefficients of the human and bovine ocular tissues. The scattering anisotropy value was determined by iteratively running the inverse adding doubling method program and a Monte Carlo simulation of light-tissue interaction until the minimum difference in experimental and computed values for R_d and T_t were realized. A comparison between the optical characterization of human and bovine ocular samples is also made.

Citation Download Citation

Dhiraj K. Sardar, Raylon M. Yow, Guang-Yin Swanland, Robert J. Thomas, and Andrew T. C. Tsin "Optical properties of ocular tissues in the near infrared region", Proc. SPIE 6138, Ophthalmic Technologies XVI, 613815 (7 March 2006); https://doi.org/10.1117/12.643874

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