Abstract
Femtosecond laser (FSL) cataract surgery is in its infancy but is rapidly gaining popularity due to the improved consistency and predictability for corneal incisions and anterior capsulorhexis. It enables subsequently less phacoemulsification energy and time to be employed, which has gains in terms of reduced corneal oedema. In addition, the FSL allows better circularity of the anterior capsulotomy, capsule overlap, intraocular lens (IOL) placement and centration of the IOL. These advantages have resulted in improved visual and refractive outcomes in the short term. Complication rates are low which reduce with surgeon experience. This review article focuses on the Alcon LenSx system.
Highlights
Ophthalmology has always been at the forefront in the use of lasers (Light Amplification by Stimulated Emission of Radiation) and a variety of lasers have been employed for more than 50 years [1,2,3]
Other lasers operate by photoablation such as the excimer laser used in refractive surgery [6, 7] and by photodisruption such as the neodymium: yttrium-aluminium-garent (Nd:YAG) laser [8] (Fig. 1)
Anterior capsulotomy circularity and PCL centration Authors performed two studies at Semmelweis University in Budapest in an attempt to ascertain the accuracy of the circularity of the Femtosecond laser (FSL) rhexis with the Alcon LenSx and the effect on intraocular lens (IOL) centration postoperatively. They found that the LenSx performed anterior capsulotomy was more regularly shaped and provided better centration and capsule/IOL overlap compared with the manual capsulorhexis (Fig. 5)
Summary
Ophthalmology has always been at the forefront in the use of lasers (Light Amplification by Stimulated Emission of Radiation) and a variety of lasers have been employed for more than 50 years [1,2,3]. The Alcon LenSx laser system is capable of providing a variable numerical aperture for optimal performance in both the corneal and lens plane [15]. The first human FSL assisted cataract surgery was performed with the Alcon LenSx in 2008 by Zoltan Nagy at Semmelweis University in Budapest, Hungary [22].
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