Figure 2.

Optical characterization of the waveguides. (A) Optical transmittance of the waveguide measured in quartz cuvette. (B) Loss coefficient (α) to air and scleral tissue for flat waveguides of different thicknesses. Data are fit to α ∼ 1/t, showing that higher loss is achieved with thinner waveguides. The predicted propagation loss is 0.0044 mm⁻¹ to air, and 0.0059 mm⁻¹ to sclera, for a total loss of 0.0103 mm⁻¹.