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Multifocal versus monofocal intraocular lenses. Visual and refractive comparisons
A el-Maghraby1, A Marzouky, E Gazayerli
1El-Maghraby Eye Hospital, Jeddah, Saudi Arabia.
Journal of Cataract and Refractive Surgery
|March 1, 1992
Summary
Multifocal intraocular lenses (IOLs) significantly improved uncorrected near vision compared to monofocal implants in a clinical trial. Patients with multifocal IOLs achieved better near acuity, demonstrating their effectiveness for vision correction.
Area of Science:
- Ophthalmology
- Biomedical Engineering
- Clinical Trials
Background:
- Cataract surgery often involves intraocular lens (IOL) implantation.
- Monofocal IOLs provide good distance vision but require reading glasses for near tasks.
- Multifocal IOLs aim to provide both distance and near vision, reducing spectacle dependence.
Purpose of the Study:
- To compare the visual outcomes of multifocal IOLs versus conventional monofocal IOLs.
- To assess uncorrected near visual acuity in patients implanted with either IOL type.
Main Methods:
- A unilateral prospective clinical trial randomized 77 patients.
- Participants received either a 3M multifocal IOL or a standard monofocal IOL.
- Visual acuity was assessed at the two to four-month postoperative visit.
Main Results:
- Multifocal IOL recipients showed superior uncorrected near vision compared to monofocal IOL recipients.
- 30% of multifocal IOL patients achieved J1 near acuity versus 4% of monofocal IOL patients.
- With distance correction, 54% of multifocal IOL patients had J1-J2 near acuity, compared to 28% of monofocal IOL patients (P = .04).
Conclusions:
- Multifocal IOLs offer a significant advantage in uncorrected near vision post-implantation.
- These findings suggest multifocal IOLs can enhance visual independence for near tasks.
- No serious postoperative complications were reported in either IOL group.