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Updated: Mar 28, 2026
A Standardized Obstacle Course for Assessment of Visual Function in Ultra Low Vision and Artificial Vision
Published on: February 11, 2014
Visual function and reading speed after bilateral implantation of 2 types of diffractive multifocal intraocular
Anja Liekfeld1, Angela Ehmer1, Ulrike Schröter1
1From the Klinikum Ernst von Bergmann Gemeinnützige GmbH, Potsdam, Germany.
Purpose:
To compare the functional outcomes of primary implantation of a monofocal intraocular lens (IOL) in the capsular bag and an add-on multifocal IOL in the sulcus with the functional results of a conventional multifocal posterior chamber IOL and to evaluate the multifocal add-on IOL as an effective alternative to a conventional multifocal IOL.
Setting:
Ernst von Bergmann Eye Clinic, Potsdam, Germany.
Design:
Prospective nonrandomized case series.
Methods:
Cataract surgery patients were assigned to have bilateral implantation of a monofocal IOL (Aspira-aAY) in the capsular bag followed by a multifocal add-on IOL (Diff-sPB) in the sulcus (Group A) or with a conventional multifocal IOL (Diffractiva-s) in the capsular bag (Group B). The main study outcomes were assessed at the last follow-up visit (6 months postoperatively) and included refraction, intraocular pressure, visual acuity, reading speed, contrast sensitivity, defocus curve, and patient satisfaction.
Results:
The study comprised 26 patients (52 eyes) Cataract surgery was uneventful in all cases. No severe complications were observed 6 months postoperatively. Visual performance with a multifocal diffractive add-on IOL was equivalent to that achieved with a conventional multifocal diffractive posterior chamber IOL. Similarly, there were no significant differences in patient satisfaction and reading speed for any type of letter size between groups (P > .05).
Conclusion:
Implanting a multifocal add-on IOL in the sulcus in addition to a monofocal IOL in the capsular bag produced outcomes similar to those of single implantation of a standard multifocal IOL in the capsular bag.
Financial Disclosure:
No author has a financial or proprietary interest in any material or method mentioned.
