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Open Access Highly Accessed Research article

Visual acuity improvements after implantation of toric intraocular lenses in cataract patients with astigmatism: a systematic review

Blaise Agresta1, Michael C Knorz2*, Christina Donatti1* and Daniel Jackson3*

Author Affiliations

1 Health Economics and Outcomes Research, IMS Health, London, UK

2 FreeVis LASIK Center, Medical University of Mannheim, Mannheim, Germany

3 Market Access and Reimbursement, Alcon Laboratories, Inc, Cointrin, Switzerland

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BMC Ophthalmology 2012, 12:41  doi:10.1186/1471-2415-12-41

Published: 15 August 2012

Abstract

Background

Cataracts are a common and significant cause of visual impairment globally. We aimed to evaluate uncorrected distance visual acuity (UDVA) as an outcome in treating astigmatic cataract patients to assist clinicians or ophthalmologists in their decision making process regarding available interventions.

Methods

Medline, Embase and Evidence Based Reviews were systematically reviewed to identify relevant studies reporting changes in UDVA, UIVA and UNVA after cataract surgery in presbyopic patients. Strict inclusion/exclusion criteria were used to exclude any non-relevant studies. Relevant outcomes (UDVA, UIVA and UNVA) were identified from the studies retrieved through the systematic review process.

Results

The systematic review identified 11 studies which reported UCVA. All 11 studies reported UDVA. Four brands of toric intraocular lenses (IOLs) were reported in these studies. All studies identified in the literature search reported improvements in UDVA following surgical implant of a toric IOL. The largest improvements in VA were reported using the Human Optics MicroSil toric IOL (0.74 LogMAR, UDVA) and the smallest improvements were also reported using the Human Optics MicroSil toric IOL (0.23 LogMAR, UDVA) in a different study.

Conclusions

The results of this systematic review showed the aggregate of studies reporting a beneficial increase in UDVA with the use of toric IOLs in cataract patients with astigmatism.

Keywords:
Astigmatism; Toric; Intraocular lenses; Uncorrected distance visual acuity; Uncorrected near visual acuity; Visual acuity; Systematic review; Cataracts