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[Functional results with two multifocal intraocular lenses (MIOL). Array SA40 versus Acri.Twin]
U Mester1, P Dillinger, N Anterist
1Augenklinik der Bundesknappschaft, Sulzbach/Saar. sek-augen@kksulzbach.de
Summary
The Acri. Twin multifocal intraocular lens (MIOL) demonstrated superior near visual acuity compared to the Array SA40 MIOL. Both lenses showed reduced contrast sensitivity, with patients reporting general satisfaction despite some visual disturbances.
Area of Science:
- Ophthalmology
- Biomedical Engineering
Background:
- Comparison of two multifocal intraocular lenses (MIOL): Acri. Twin (diffractive, aspherical, asymmetrical light distribution) and Array SA40 (standard MIOL).
- Focus on optical design and light distribution differences between the two MIOLs.
Purpose of the Study:
- To compare the clinical performance of the Acri. Twin MIOL against the Array SA40 MIOL.
- Evaluate visual acuity, contrast sensitivity, stereopsis, and patient satisfaction.
Main Methods:
- Bilateral implantation of Acri. Twin (16 patients) and Array SA40 (14 patients) MIOLs.
- Assessment at 6 months, including visual acuity (distance/near), contrast sensitivity (photopic/mesopic), stereopsis, pupil diameter, and IOL centration.
Main Results:
- Acri. Twin MIOL showed significantly improved near visual acuity (0.8 vs 0.4).
- Both MIOLs exhibited contrast sensitivity inferior to aspherical monofocal IOLs.
- Patients reported general satisfaction, though dysphotic phenomena were noted for both lenses.
Conclusions:
- The Acri. Twin MIOL offers enhanced near vision compared to the Array SA40.
- Both multifocal designs present trade-offs in contrast sensitivity and potential for visual disturbances.
- Further research may be needed to optimize contrast sensitivity in MIOLs.