Nano-Titanium Oxide in Polymeric Contact Lenses: Short Communication

Abstract

Many individuals suffer from myopia or hyperopia and astigmatism owing to the refractive defects of the eye optics or because of the use of inappropriate contact lenses. This study dealt with three polymers Poly(methyl methacrylate) (PMMA), Poly(Hydroxyl methacrylate) (PHEMA), and Poly(glycidyl methacrylate) (PGMA) and doping them with TiO2 nanoparticles to evaluate the difference between the effect of each lens on the human eye. The TiO2 NPs were prepared in this work by the sol–gel method to obtain 70–90 nm sized particles. Modulation transfer (MTF) and spot diagram were assessed to measure ocular performance. The PGMA-TiO2 contact lens provided the highest image quality at the lowest probability (P) of about p < 0.0001 when inserted on an aberrated eye system because of its ability to eliminate the chromatic aberrations created inside the eyes having a smaller spot size.

Zirconia nanocomposites and their applications as transparent advanced optical materials with high refractive index

“…Shaker et al reported the fabrication of THPN ophthalmic lenses that incorporated commercial TiO 2 NPs into each matrix including poly(methyl methacrylate) (PMMA), poly(hydroxyethyl methacrylate) (PHEMA), and poly(glycidyl methacrylate) (PGMA). 55 The THPN lenses showed improved image clarity and small chromatic aberration. Messaddeq et al proposed a gradient-refractive-index lens with UV polymerization kinetics of the prepolymer.…”

Vinyl Polymers as Key Materials in Contact Lens Design: A Review of Progress and Future Directions

“…This stability is imperative in averting lens deformation, tearing, or unintended dislodgement, thereby fortifying reliable vision correction. [11,12] Synthesized through diverse manufacturing techniques, including spin casting and molding processes, vinyl polymers enable the production of lenses with precise dimensions, cus-tomized parameters, and unwavering quality. [13] Tailored polymerization techniques further endow these lenses with specific material properties, while surface modification and functionalization methods augment their performance.…”

“…This stability is imperative in averting lens deformation, tearing, or unintended dislodgement, thereby fortifying reliable vision correction. [ 11,12 ]…”