Monofocal intraocular lens based on the Bessel principle for improved intermediate vision: a comparative assessment - Takeaways - MDSpire

Monofocal intraocular lens based on the Bessel principle for improved intermediate vision: a comparative assessment

  • By

  • Frederick Kremser

  • Weijia Yan

  • Ramin Khoramnia

  • Gerd Uwe Auffarth

  • Grzegorz Łabuz

  • June 13, 2026

  • 0 min

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  • 1

    Conventional monofocal intraocular lenses (IOLs) provide excellent single focal point vision but require reading glasses.

  • 2

    Enhanced monofocal IOLs, like the TECNIS Eyhance, offer improved intermediate vision without increasing photic phenomena.

  • 3

    The Hanita Extend IOL utilizes Bessel beam technology to achieve an elongated depth of focus optimized for intermediate vision.

  • 4

    Optical benchmarking of the IOLs was conducted using the OptiSpheric IOL PRO2, following ISO guidelines for accurate assessment.

  • 5

    The study aims to compare the optical qualities of the Hanita Extend against the well-established TECNIS Eyhance IOL.

Original Source(s)

Monofocal intraocular lens based on the Bessel principle for improved intermediate vision: a comparative assessment

  • by Frederick Kremser, Weijia Yan, Ramin Khoramnia, Gerd Uwe Auffarth, Grzegorz Łabuz

  • June 13, 2026

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