Modulation transfer function analysis in myopic model eye

Othman, Shah Farez and Tamchek, Nizam and Muhammad, Farah Diana and Ithnin, Mohd. Hafidz (2021) Modulation transfer function analysis in myopic model eye. ASM Science Journal, 16. pp. 1-8. ISSN 1823-6782 E-ISSN 2682-8901

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Abstract

Hitherto, the eye modelling is based on the emmetropic eye taken its ocular optical components value from the population-based studies. However, no studies have been done to study the effect of aberration of myopic refractive error by modelling the eye using the parameters from ocular biometrics and ray tracing method. This study aimed to determine the modulation transfer function (MTF) of myopic refractive error using eye modelling and ray tracing technique. Three eye models had been successfully modelled in Zemax software, namely, emmetropic Liou and Brennan, myopic Liou and Brennan, corrected myopic Liou and Brennan. The optical performance of the eye models were tested using the MTF. From the MTF analysis at 100 cycles/mm, the MTF value of both tangential and sagittal rays for myopic Liou and Brennan eye was the lowest compared to its emmetropic model. Also, the MTF value of the corrected myopic Liou and Brennan model was higher compared to the uncorrected myopic model. However, the corrected myopic model produced lower MTF values for both tangential and sagittal MTF compared with the emmetropic model of Liou and Brennan. In this study, the accuracy of the MTF for myopia correction and emmetropia were calculated. It was found that the accuracy of the MTF value for corrected myopia at tangential and sagittal rays was lower.

Item Type:	Article (Journal)
Uncontrolled Keywords:	model eye; modulation transfer function; myopia; optical performance
Subjects:	Q Science > QC Physics R Medicine > RE Ophthalmology
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Allied Health Sciences > Department of Optometry and Visual Science Kulliyyah of Allied Health Sciences
Depositing User:	Dr Shah Farez Othman
Date Deposited:	18 Oct 2022 09:00
Last Modified:	18 Oct 2022 09:00
URI:	http://irep.iium.edu.my/id/eprint/100694

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