Stability and visual outcomes yielded by three intraocular trifocal lenses with same optical zone design but differing material or toricity



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Poyales Galán, Francisco and Garzón Jiménez, Nuria and Pizarro, Daniel and Cobreces, Santiago and Hernández, Adolfo (2018) Stability and visual outcomes yielded by three intraocular trifocal lenses with same optical zone design but differing material or toricity. European Journal of Ophthalmology . ISSN 1120-6721

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Purpose: To compare rotational stability, centration and visual outcomes provided by three trifocal lens models that have the same optical zone design but different material, composition, and/or toricity. Methods: The study included 78 patients with symmetric bilateral intraocular lens implantation. The lenses under evaluation were trifocal intraocular lenses made of hydrophilic acrylic material: a spherical lens 26% hydrophilic acrylic (POD FineVision), a similar lens but having a toric design (POD Toric FineVision), and a trifocal lens 25% hydrophilic acrylic material (FineVision/MicroF). Moreover, the lenses share the same optical zone design. The lenses’ rotational stability and centration were measured by means of the PIOLET software, which relies on recording and image processing techniques to determine lens rotation and centration based on slit-lamp images. We also assessed patients’ visual quality by means of 25, 40, and 80 cm VA tests.
Results: The best centration results were achieved with the POD Toric FineVision model, although the differences were not statistically significant. As for lens rotation, it was below 5° in all cases under study. Regarding VA, all subjects attained at least 0.3 logMAR for far distance uncorrected VA, at 80 cm VA was about 0.2 logMAR, at 40 cm it was above 0.15 logMAR, and at 25 cm it was about 0.3 logMAR for both lens types.
Conclusion: All three intraocular lens models yield excellent visual results at far, near as well as intermediate distances. The POD FineVision and POD Toric FineVision models, with double C-loop design, yielded the best results centrationwise and rotation-wise. Differences had no clinical relevance.

Item Type:Article
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Article first published online: September 10, 2018
Received: March 20, 2018; Accepted: July 27, 2018

Uncontrolled Keywords:Trifocal, rotation, astigmatism, intraocular lens, cataract
Subjects:Medical sciences > Optics > Contact lenses
Medical sciences > Optics > Visual perception
Medical sciences > Optics > Optical materials
ID Code:48993
Deposited On:14 Dec 2018 13:47
Last Modified:14 Dec 2018 13:47

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