Imaging quality of bifocal piggyback intraocular lens versus ReSTOR and TECNIS multifocal lenses.

Abstract:

PURPOSE:The imaging quality provided by a piggyback integrated by a monofocal intraocular lens (IOL) + a bifocal IOL of zero power and +3.75 diopters of addition is compared with the optics quality of a simple multifocal IOL of the same power and addition. METHODS:The imaging quality was evaluated by determining the modulation transfer function (MTF), using an artificial eye simulating in vivo conditions of the anterior chamber, including an artificial cornea and a wet cell containing physiologic solution where the IOL was positioned. The MTFs of the bifocal piggyback for near and distance vision were measured, with pupil diameters of 3 and 5 mm, and compared with the MTFs of an equivalent power of ReSTOR and TECNIS multifocal IOLs measured under the same conditions. RESULTS:The MTFs for distance and near focus of the bifocal piggyback are similar to the MTFs of the ReSTOR and TECNIS multifocal IOLs with the two diameters of pupil. A more accurate comparison, values of average modulation, and Strehl ratio show a greater similitude with ReSTOR than with TECNIS. CONCLUSIONS:The bifocal piggyback system provides a similar imaging quality to that obtained with a ReSTOR multifocal IOL and, like the ReSTOR, provides better performance in distance vision than in near vision, whereas the TECNIS multifocal IOL provides the best performance.

journal_name

Eur J Ophthalmol

authors

Artigas JM,Felipe A,Diaz-Llopis M,Garcia-Delpech S,Navea A

doi

10.1177/112067211002000109

subject

Has Abstract

pub_date

2010-01-01 00:00:00

pages

71-5

issue

1

eissn

1120-6721

issn

1724-6016

pii

F48B75D4-2160-4DA4-9DBE-A50F30407B99

journal_volume

20

pub_type

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