Abstract
We present outcomes of an imaging experiment using the refractive light sword lens (LSL) as a contact lens in an optical system that serves as a simplified model of the presbyopic eye. The results show that the LSL produces significant improvements in visual acuity of the simplified presbyopic eye model over a wide range of defocus. Therefore, this element can be an interesting alternative for the multifocal contact and intraocular lenses currently used in ophthalmology. The second part of the article discusses possible modifications of the LSL profile in order to render it more suitable for fabrication and ophthalmological applications.
Highlights
Insufficient accommodation range, as it occurs in the case of presbyopia, is a frequent and difficult problem that affects the sight of many people
The obtained method relies on precise micromachining and molding injection technology. In response to these considerations, we have decided to investigate the light sword lens (LSL) in terms of the simulated attainable visual acuity (VA) for the range of optical powers varying from 0 diopter to 4 diopters
The results show the effect of the LSL on the depth of field in our simplified eye model
Summary
Insufficient accommodation range, as it occurs in the case of presbyopia, is a frequent and difficult problem that affects the sight of many people. The obtained method relies on precise micromachining and molding injection technology In response to these considerations, we have decided to investigate the LSL in terms of the simulated attainable visual acuity (VA) for the range of optical powers varying from 0 diopter (when the object is located at infinity) to 4 diopters (corresponding to the near vision object plane situated at 25 cm). Owing to the lower optical power and the symmetry of corneal focal lengths (unlike that of the Gullstrand eye), we imposed an increase in the objects distances by the same factor It is compensated by higher magnification of the optical system resulting in the same size and resolution of an image compared with the Gullstrand eye.
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