Impact of PMMA/ZnO Nanocomposite on the Polychromatic Performance of Contact Lens
Globally, many people suffer from refractive errors. Using the nanocomposite materials with a high Abbe number (νd) and a high refractive index (RI) has made an excellent promise for compound contact lenses (CLs) in correcting vision errors and as another solution to the discomfort of eyeglasses and (LASIK) surgery. In this work, the nanoparticles of Zinc oxide (ZnO-NPs) are used as a promising material to increase the reflective index and the high transparency of a poly-methyl methacrylate. The casting method was used to prepare ZnO-NPs and PMMA/ZnO CL at a concentration of 2 and 5% wt. The impact of contact lens on natural eye vision is evaluated using an optics design software ZEMAX. The eye performance was assessed using modulation transfer function (MTF), image spot size plot, the encircled energy, and image simulation. The results display that the PMMA/ZnO CL improved the vision quality at the white light. In addition, PMMA/ZnO is a promising filter for eye UV protection.