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. 2023 Dec 21:17:3965-3973.
doi: 10.2147/OPTH.S438599. eCollection 2023.

Clinical Results and Factors Affecting Visual Function in Eyes Implanted with an Enhanced Monofocal Intraocular Lens

Kazuno Negishi  1 , Sachiko Masui  1 , Masahiko Ayaki  1   2 , Hidemasa Torii  1 , Erisa Yotsukura  1 , Yasuyo Nishi  1
Affiliations

Clinical Results and Factors Affecting Visual Function in Eyes Implanted with an Enhanced Monofocal Intraocular Lens

Kazuno Negishi et al. Clin Ophthalmol. .

Abstract

Purpose: To compare the clinical results achieved with the enhanced monofocal intraocular lenses (IOLs) with those of the monofocal IOL and investigate factors affecting the distance, intermediate, and near vision.

Patients and methods: Patients were included who underwent bilateral consecutive cataract surgeries using the same IOLs with follow-up to 1 month postoperatively. Refractions, monocular UDVA and CDVA, and binocular distance-corrected functional visual acuity at 5 meters (BDCFVA), at 66 centimeters (BDCIFVA) and at 40 centimeters (DCNVA) were assessed. Multiple regression analysis was used to assess the factors affecting binocular BDCFVA, BDCIFVA, and BDCNFVA. Subjective symptoms were assessed using the Near Activity Visual Questionnaire (NAVQ) and visual analogue scale (VAS).

Results: Sixty patients (120 eyes) implanted with the Tecnis Eyhance IOL (30 patients, 60 eyes) or the Tecnis monofocal IOL (30 patients, 60 eyes) were included. The Tecnis Eyhance IOL provided significantly better binocular BDCIFVA than the Tecnis monofocal IOL in patients under 70 years of age. Multiple regression analysis showed that age was the only factor affecting distance and intermediate visual function in eyes with the Tecnis Eyhance IOL; gender, pupillary diameter, axial length, and average keratometry were not significant. There were no significant differences in subjective symptoms.

Conclusion: The comprehensive cohort analysis did not confirm the advantage on the intermediate vision of the Tecnis Eyhance IOL. Younger age may be an important factor to benefit from the unique optical characteristics of this IOL.

Keywords: age; functional visual acuity; intermediate vision; presbyopia correcting intraocular lens.

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Conflict of interest statement

Professor Kazuno Negishi reports grants from Johnson and Johnson Vision, during the conduct of the study; personal fees from Johnson and Johnson Vision, outside the submitted work. The authors report no other conflicts of interest in this work.

Figures

Figure 1
Figure 1
Functional visual acuity measurement system (AS-28, Kowa, Aichi, Japan).
Figure 2
Figure 2
Representative results of the functional visual acuity. The blue line denotes the Landolt corrected visual acuity. The red line shows the time-wise changes in the visual acuity during testing. The green line denotes the mean logarithm of the minimum angle of resolution over 60 seconds, defined as the functional visual acuity. The yellow dots show the number of correct responses; the blue triangles indicate spontaneous blinks.
Figure 3
Figure 3
Relationships between age and the binocular functional visual acuity in patients in the E group. (A) Binocular distance-corrected functional visual acuity at 5 meters (r=0.592; P=0.001). (B) Binocular distance-corrected intermediate functional visual acuity at 66 centimeters (r=0.526; P=0.003).
See this image and copyright information in PMC

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