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September 10, 2025Open Access

Visual Performance and Subjective Outcomes with Enhanced Monofocal Intraocular Lens Implantation Targeted for Emmetropia or Modest Monovision

Key Points

Patients with bilateral emmetropia achieved good visual acuity, while those in the monovision group reported enhanced near vision.
The mean logMAR visual acuity for the monovision group was better under intermediate conditions compared to the emmetropia group, showing significant differences.
This prospective, single-centre interventional study included 60 patients targeting either emmetropia or monovision with enhanced monofocal IOLs.
High satisfaction rates were noted, with 90% of emmetropia patients and 96% of monovision patients expressing comfort with their visual outcomes.

Abstract

To determine the visual performance and patient reported outcomes after bilateral implantation of an enhanced monofocal intraocular lens (IOL) (RayOne EMV RAO200E) targeted for emmetropia or modest monovision. This was a prospective, single-centre, comparative, interventional study. Patients were divided into two groups and targeted for bilateral emmetropia or modest monovision (-1.50 D in the near eye). Manifest refraction, monocular uncorrected and corrected distance visual acuity (UDVA and CDVA), uncorrected and distance-corrected intermediate visual acuity (UIVA and DCIVA), uncorrected and distance-corrected near visual acuity (UNVA and DCNVA), and monocular and binocular defocus curves under photopic and mesopic conditions were measured at 1-month post-surgery. The Catquest 9-SF questionnaire was administered to assess patient reported visual outcomes and quality of life. 60 patients were enrolled. For the emmetropia group (n = 30), the mean logMAR UDVA, UIVA and UNVA were 0.16±0.13, 0.35±0.12 and 0.50±0.15. In the monovision group (n = 30), the values for the distance eyes were 0.13±0.11, 0.40±0.11 and 0.56±0.13; and for the near eyes 0.41±0.21, 0.27±0.16 and 0.34±0.13. Binocular defocus curves showed similar distance visual acuity but better visual acuity in the monovision group from -1.00 D to -4.00 D and -1.00 D to -3.50 D defocus under photopic and mesopic conditions respectively (p < 0.05). The defocus range (logMAR 0.2 or better) was 1.3 D for the bilateral emmetropia group and 2.5 D for the monovision group. 90% (emmetropia group) and 96% (monovision group) of patients were very or fairly satisfied with their vision, with the monovision group reporting better performance for intermediate and near tasks. Patients targeted for bilateral emmetropia achieved good functional intermediate vision, while those with modest monovision experienced enhanced intermediate and near vision. Overall, patients reported high satisfaction and good visual performance when implanted with the enhanced monofocal IOL.

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Cite This Study

Yeo et al. (Fri,) studied this question.

synapsesocial.com/papers/68c1c9f454b1d3bfb60f3b5b https://doi.org/https://doi.org/10.2147/opth.s533814

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