Journal of Vision Cover Image for Volume 25, Issue 5
April 2025
Volume 25, Issue 5
Open Access
Optica Fall Vision Meeting Abstract  |   April 2025
Poster Session: Geometric phase multifocal ophthalmic lenses for presbyopics
Author Affiliations
  • Sunil Kumar Chaubey
    Optics Group, School of Physics, University College Dublin, Ireland
  • Brian Vohnsen
    Optics Group, School of Physics, University College Dublin
Journal of Vision April 2025, Vol.25, 50. doi:https://doi.org/10.1167/jov.25.5.50
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      Sunil Kumar Chaubey, Brian Vohnsen; Poster Session: Geometric phase multifocal ophthalmic lenses for presbyopics. Journal of Vision 2025;25(5):50. https://doi.org/10.1167/jov.25.5.50.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

A lens that makes use of polarization modulation to alter the geometric phase of light is being studied as a promising optical element for presbyopia. The lens is formed with liquid crystals grating structures act as a converging lens for right-handed circularly polarized light and a diverging lens for left-handed circularly polarized light resulting in positive and negative defocus for unpolarized incident light. Integrating a higher focal length geometric phase lens with a shorter converging lens creates bifocality. The geometric phase ophthalmic lenses can provide improved visual outcomes without undesired cosmesis effects. We demonstrate that such lenses can be a prominent alternative to multifocal lenses for presbyopics. We evaluate its applicability using wave optics analysis with a model eye to determine its pros and cons.

Footnotes
 Funding: Horizon MSCA 2022-DN-01; ACTIVA; Project 101119695
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