Minimizing surgically induced astigmatism at the time of cataract surgery using a square posterior limbal incision.

Abstract:

:Purpose. To compare the surgically induced astigmatism from clear corneal and square posterior limbal incisions at the time of cataract surgery. Methods. Surgically induced astigmatism was calculated for a set of eyes after cataract surgery using a temporal 2.2 mm square posterior limbal incision. Results were compared to similar available data from surgeons using clear corneal incisions of similar size. Results. Preoperative corneal astigmatism averaged 1.0 D and was not significantly different between the incision types. Surgically induced astigmatism with the 2.2 mm posterior limbal incision averaged 0.25 ± 0.14 D, significantly lower in magnitude than the aggregate surgically induced astigmatism produced by the 2.2 mm clear corneal incision (0.68 ± 0.49 D). Conclusion. The 2.2 mm square posterior limbal incision induced significantly less, and significantly less variable, surgically induced astigmatism relative to a similar-sized clear corneal incision. This is likely to improve refractive outcomes, particularly important with regard to premium intraocular lenses.

journal_name

J Ophthalmol

journal_title

Journal of ophthalmology

authors

Ernest P,Hill W,Potvin R

doi

10.1155/2011/243170

subject

Has Abstract

pub_date

2011-01-01 00:00:00

pages

243170

eissn

2090-004X

issn

2090-0058

journal_volume

2011

pub_type

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