Open AccessA comparative study of optical quality for different polymeric contact lenses
Author(s) -
Lina M. Shaker,
Ali H. Al-Hamdani,
Ahmed A. Al-Amiery
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1234/1/012042
Subject(s) - zemax , materials science , contact lens , root mean square , poly(methyl methacrylate) , optical transfer function , polymer , lens (geology) , optics , methyl methacrylate , cls upper limits , optoelectronics , composite material , polymerization , computer science , ophthalmology , medicine , physics , electrical engineering , software , programming language , engineering
The comparision between pure organic polymer namely Poly(methyl methacrylate) “PMMA” and impregnated with Titanium dioxide nanoparticles (TiO 2 NPs) as contact lenses on image quality of human eye have been investigated. Pure PMMA and TiO 2 -PMMA materials were considered and applied using ZEMAX software as contact lenses (CLs) basis on Liou & Brennan eye model. Ocular performance was evaluated and analysis by three criteria, namely tangential modulation transfer function (TMTF), wavefront aberration characteristics and root mean square (RMS) of spot diagram. All the criteria showed that contact lens made of TiO 2- PMMA when its refractive index (RI) = 1.61 and Abbe number (ν d ) = 31.8 provided the closest imaging properties to the healthy eye. From the results of our investigation, PMMA doping with TiO 2 resulted in balanced RI with ν d polymer and it provided the best retinal image when it used in CLs in comparison with image properties of the resulting image using the lens of pure PMMA polymer.