Figure 2.

Electron microscopy and spectroscopy analyses of the nanopatterned contact lenses. (a–c) SEM images of 1D nanostructures on the contact lens with increasing magnification (scale bar = 5 μm). Scale bar for (c) is 2 μm. The optical transmission spectra for commercial contact lens in three states: (d) plain lens, (e) black dye coated lens, (f) and nanopatterned lens at different moisture conditions. Effect of incident light polarization on transmission in (g) fully hydrated plain lens, (h) dyed lens in ambient humidity, and (i) nanopatterned lens in ambient humidity.