Abstract
We present results of numerical analysis of the Strehl ratio characteristics for the light sword optical element (LSOE). For comparison there were analyzed other optical imaging elements proposed for compensation of presbyopia such as the bifocal lens, the trifocal lens, the stenopeic contact lens, and elements with extended depth of focus (EDOF), such as the logarithmic and quartic axicons. The simulations were based on a human eye's model being a simplified version of the Gullstrand model. The results obtained allow to state that the LSOE exhibits much more uniform characteristics of the Strehl ratio comparing with other known hitherto elements and therefore it could be a promising aid to compensate for the insufficient accommodation range of the human eye.
Highlights
Questions related with the human eye were and probably will remain one of the most important topics constituting the science of optics [1]
In order to compare the performance of the elements intended for presbyopia compensation, the Strehl ratio was chosen
We presented results of simulation for the Strehl ratio of the light sword optical element (LSOE) and its comparison with other elements proposed up to the present for presbyopia compensation, such as: the stenopeic lens, the bifocal lens, the trifocal lens, the logarithmic axicon and the quartic axicon
Summary
Questions related with the human eye were and probably will remain one of the most important topics constituting the science of optics [1]. In the last group we find axicons [18,19,20], cubic masks [21] and LSOE [22] This last element was found recently as an interesting option because of its relatively good image quality [23], [24], which remains almost independent on the pupil’s diameter [25]. The present paper deals with a comparison of the imaging properties of the most popular elements designed for presbyopia compensation with the LSOE. For this purpose the Strehl ratio was chosen. The comparison was performed using the Gullstrand model of the human eye [26], [27], which was modified according to the specific needs of our problem and software package for simulation of the light diffraction [28], [29]
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