Optical scattering, absorption, and polarization of healthy and neovascularized human retinal tissues.
The optical scattering, absorption, and polarization properties of human retinal tissues are investigated for a number of laser wavelengths in the visible range. The indices of refraction of these tissues are determined by applying Brewster's law. The inverse adding doubling method based on the diffusion approximation and radiative transport theory is applied to the measured values of total diffuse transmission, total diffuse reflection, and index of refraction to determine the optical absorption, scattering, and scattering anisotropy coefficients of the intact retinal tissues from healthy and diseased (neovascularized) human eyes. The polarization studies show that the retinal tissues possess significant intrinsic polarization characteristics, that are more pronounced in diseased tissues than in healthy tissues.
Sardar
Dhiraj K
DK
University of Texas at San Antonio, Department of Physics and Astronomy, San Antonio, Texas 78249-0697, USA. dsardar@utsa.edu
Yow
Ray M
RM
Tsin
Andrew T C
AT
Sardar
Ratna
R
D000042:Absorption; D006801:Humans; D066298:In Vitro Techniques; D008027:Light; D012016:Reference Values; D012031:Refractometry / Q000379:methods*; D012160:Retina / Q000473:pathology* / Q000503:physiopathology*; D015861:Retinal Neovascularization / Q000473:pathology* / Q000503:physiopathology*; D012171:Retinal Vessels / Q000473:pathology / Q000503:physiopathology; D012542:Scattering, Radiation