Outcomes and Visual Performance of Mini-Monovision EDOF Intraocular Lenses
Overview
This study compared visual outcomes following bilateral implantation of AcrySof® IQ Vivity® EDOF intraocular lenses using a mini-monovision strategy versus bilateral emmetropia. Results demonstrated that mini-monovision with less than 1.0 D anisometropia improved near vision without compromising distance or intermediate visual acuity and maintained good visual quality.
Background
Myopia prevalence increases with age, leading to greater demand for near-vision correction in elderly patients. Extended depth-of-focus (EDOF) intraocular lenses, such as the AcrySof® IQ Vivity®, extend the range of clear vision but provide suboptimal near vision. Mini-monovision, targeting slight myopia in the non-dominant eye, is used to enhance near vision while preserving distance vision. However, concerns exist regarding potential reductions in contrast sensitivity and stereopsis with monovision strategies.
Data Highlights
Parameter
Group A (Mini-Monovision)
Group B (Emmetropia)
Sample Size
30 patients
31 patients
Near Addition Power (Non-dominant Eye)
≥ 0.5 D and < 1.0 D
Emmetropia
Follow-up Duration
1 month post-op
1 month post-op
Visual Acuity Assessments
UDVA, UIVA, UNVA
UDVA, UIVA, UNVA
Visual Quality Measures
MTF, Strehl Ratio
MTF, Strehl Ratio
Key Findings
Mini-monovision with Vivity IOLs achieved improved uncorrected near visual acuity (UNVA) compared to bilateral emmetropia.
Distance (UDVA) and intermediate (UIVA) visual acuities were comparable between mini-monovision and emmetropia groups.
Visual quality parameters, including modulation transfer function and Strehl ratio, showed no significant decline with mini-monovision.
Anisometropia was maintained below 1.0 diopter to minimize patient discomfort and preserve binocular visual function.
No significant intraoperative or postoperative complications were reported in either group.
Clinical Implications
The mini-monovision strategy using AcrySof® IQ Vivity® EDOF IOLs can effectively enhance near vision in cataract patients without compromising distance or intermediate vision or visual quality. Maintaining anisometropia below 1.0 D is critical to avoid adverse effects such as asthenopia or reduced stereopsis. This approach may increase spectacle independence and patient satisfaction postoperatively.
Conclusion
Mini-monovision with EDOF Vivity IOLs offers a balanced solution to improve near vision while preserving overall visual performance and quality. It represents a viable option for patients seeking enhanced spectacle independence after cataract surgery.
Related Resources & Content
Skov AG et al. 2020 -- Surgically induced anisometropia and visual outcomes
Alcon Laboratories -- AcrySof® IQ Vivity® IOL product information
Clinical studies on EDOF IOLs and mini-monovision strategies
