Contrast transfer characteristics of the light sword optical element designed for presbyopia compensation

K. Petelczyc; S. Bará; A. Ciro López; Z. Jaroszewicz; K. Kakarenko; A. Kolodziejczyk; M. Sypek

doi:10.2971/jeos.2011.11053

Journal of the European Optical Society - Rapid publications, Vol 6 (2011)

Contrast transfer characteristics of the light sword optical element designed for presbyopia compensation

K. Petelczyc, S. Bará, A. Ciro López, Z. Jaroszewicz, K. Kakarenko, A. Kolodziejczyk, M. Sypek

Abstract

The paper discusses the abilities of the light sword optical element (LSOE) for presbyopia compensation. The imaging properties are analyzed by means of the modulation transfer functions and output images of the star resolution test. All numerical calculations are performed assuming an optical set-up simulating the presbyopic human eye and based on the Gullstrand model. In order to have a meaningful comparison we expand our study and present adequate analysis for other elements potentially useful in ophthalmology as reading glasses, bifocal lenses and axicons. According to the obtained results the LSOE can successfully realize vision with an extended depth of field. The element makes possible the compensation of an assumed defocus up to 4 dioptres. The output images formed by the LSOE are well recognizable and have acceptable qualities for near as well as far object distances.

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