Comparison of visual performance between two aspheric monofocal intraocular lens models



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Poyales Galán, Francisco and Garzón Jiménez, Nuria and Zhou, Ying and Millán García Varela, María Sagrario and Vega Lerin, Fidel (2021) Comparison of visual performance between two aspheric monofocal intraocular lens models. Clinical and Experimental Optometry . 8 p.. ISSN 1444-0938

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Clinical relevance: It is important to distinguish between visual acuity, optical quality and quality of vision when outcomes obtained with intraocular lenses are evaluated. These parameters, that include objective and subjective tests, should be assessed to obtain results that is not biased.
Background: To assess the difference in visual and optical quality between two monofocal intraocular lens models.
Methods: : This was a prospective, parallel and randomised clinical study conducted at Miranza IOA, a private clinic in Madrid, Spain. Sixty patients were implanted bilaterally, 30 per group, with two aspheric IOLs with induced spherical aberration of −0.27 μm for Group A and −0.20 μm for Group B. Visual outcomes obtained at 1 and 3 months after surgery included both uncorrected (UCVA) and corrected monocular distance visual acuity (DCVA), objective scattering index (OSI), modulation transfer function (MTF) cut-off, Strehl Ratio (SR), contrast sensitivity defocus curve (CSDC), intraocular lens spherical aberration (SA), and longitudinal chromatic aberration of the eye. Activity limitations in daily life was assessed using CatQuest-9SF questionnaire.
Results: There were statistically significant differences for DCVA (004 LogMAR; p = .008) and SR (0.03;p = .003) between groups. Outcomes related to CSDC showed statistically significant differences for vergences between −0.50 D and +1.00 D (3mmpupil) and for vergences of 0.00 D and +0.50 D (4.5 mm pupil) between groups. Overall, Group A showed better results regarding visual and optical quality, including a lower longitudinal chromatic aberration result in comparison to Group B. Patient satisfaction evaluated with CatQuest-9SF showed that Group A achieved better outcomes, although the differences were statistically significant only for the ‘Reading text on television’ item (p = 0.027).
Conclusions: Both intraocular lens models showed excellent quantity of vision, optical and visual quality as well as high patient satisfaction. Despite this, the the Group A model provided slightly better outcomes than the Group B model.

Item Type:Article
Additional Information:

Received 1 September 2021; Revised 12 October 2021; Accepted 18 November 2021.

Uncontrolled Keywords:Monofocal intraocular lens; optical quality; quantity of vision; visual quality
Subjects:Medical sciences > Optics > Optometry
Medical sciences > Optics > Visual perception
Medical sciences > Optics > Optical materials
ID Code:69103
Deposited On:25 Feb 2022 10:40
Last Modified:25 Feb 2022 11:41

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