PLZT ceramics as optical phantom for simulation of light scattering in eye segments and other biological tissues

Coefficients of light absorption mu(a) and scattering Cls for biological tissues lie within a broad range - minimum ones for healthy eye tissues up to higher values (f.e. mu(a) =0.3 cm(-1) and mu(s) = 40 cm(-1) at 633 nm for muscle tissues (1)) for other and mainly turbid tissues. The specific feature of the transparent PLZT ceramics (having absorption mu(a) > 0.1 cm(-1) in the visible and in the near infrared spectrum range) is electrically controlled light scattering. The present work reports on experimental results of the light transport and backscattering for PLZT 9/65/35 (Pb0.91L0.09Zr0.65Ti0.35O3). We propose PLZT ceramics with fast and continuously controllable light scattering as an optical phantom for photon migration studies and for scattering obstacles in vision disability tests.