Comparison of surgically induced astigmatism between femtosecond laser and manual clear corneal incisions for cataract surgery

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• 作者：Vasilios F. Diakonis ; MD ; PhD ; ^{diakonis@gmail.com" class="auth_mail" title="E-mail the corresponding author}Author Vitae ; Nilufer Yesilirmak ; MD ; Florence Cabot ; MD ; Vardhaman P. Kankariya ; MD ; George A. Kounis ; PhD ; Daniel Warren ; MSc ; Ibrahim O. Sayed-Ahmed ; MD ; Sonia H. Yoo ; MD ; Kendall Donaldson ; MD ; MS
• 刊名：Journal of Cataract & Refractive Surgery
• 出版年：2015
• 出版时间：October 2015
• 年：2015
• 卷：41
• 期：10
• 页码：2075-2080
• 全文大小：478 K

文摘

To assess the surgically induced corneal astigmatism (SIA) introduced by femtosecond laser–assisted clear corneal incisions (CCIs) for cataract extraction and to compare it with the SIA of manually created CCIs.

<h4 id="absSec_2">Settingh4>

Bascom Palmer Eye Institute, Miller School of Medicine, Miami, Florida, USA.

<h4 id="absSec_3">Designh4>

Prospective nonrandomized comparative case series.

<h4 id="absSec_4">Methodsh4>

Eyes received femtosecond laser&ndash;assisted CCIs (Group 1) or manual CCIs (Group 2). The surgical plan included 1 primary and 1 secondary port; the sites of the incisions were the same in both groups and were diametrically opposed between the right eye and left eye. The SIA was assessed using the preoperative and 1-month postoperative keratometric values obtained from corneal topography examinations.

<h4 id="absSec_5">Resultsh4>

This study included 72 eyes of 68 patients with a mean age of 69.0 years ± 9.87 (SD) (range 36 to 90 years). Thirty-six eyes received femtosecond laser&ndash;assisted CCIs (Group 1) and 36 received manual CCIs (Group 2). The mean preoperative topographic corneal astigmatism was −1.19 ± 0.68 diopters (D) (range 0 to 2.50 D) and −0.92 ± 0.63 D (range 0.10 to 2.45 D) for Group 1 and Group 2, respectively, whereas, 1 month after cataract surgery, it was −1.16 ± 0.63 D (range 0.20 to 2.57 D) and −0.95 ± 0.64 D (range 0.21 to 2.37 D), respectively. Multivariate vector analysis revealed no statistically significant difference between the 2 groups for preoperative astigmatism, postoperative astigmatism, and SIA (P > .05 for all comparisons between Group 1 and Group 2).

<h4 id="absSec_6">Conclusionh4>

Femtosecond laser&ndash;assisted and manual corneal incisions for cataract surgery did not appear to significantly alter corneal astigmatism, whereas they showed comparable SIA.

<h4 id="absSec_7">Financial Disclosureh4>

Drs. Yoo and Donaldson are speakers for and consultants to Alcon Surgical, Inc., and Abbott Medical Optics, Inc. No other author has a financial or proprietary interest in any material or method mentioned.