Nano-Particle doped polymers to improve contact lenses optical quality

Abstract

Polymer-based nanocomposites exhibit different optical virtues such as high refractive index (RI), Abbe number (νd) and visible light transmittance (T %) above 90%. These hybrid materials attract more interest in optoelectronic applications such in the ophthalmic optics. The aim of this work is to study the impact of contact lenses doped with aluminum nanoparticles on aberrated human eye. ZEMAX mainstream optical design software was used for eye modeling based on Liou & Brennan eye model and then the BHESP/PA/AL contact lens was applied. Ocular performance was evaluated by modulation transfer function (MTF), spot diagram root mean square (RMS) and the geometric encircled energy (EE) metrics. The used criteria show that the best visual performance is obtained when BHESP/PA/AL-CL is used (P < 0.0001) because it reduced the generated monochromatic and polychromatic aberrations inside the eye. The required balance between the refractive index and abbe number of the chosen polymer affect the transparency, transmittance and refractive errors correction.