Evaluation of the mechanical properties of the anterior lens capsule following femtosecond laser capsulotomy at different pulse energy settings

Journal of Refractive Surgery
Gábor L SándorZoltán Z Nagy

Abstract

To evaluate and compare the mechanical properties of anterior capsule opening performed with femtosecond laser capsulotomy at different energy settings in ex vivo porcine anterior lens capsule specimens. Twenty-five fresh porcine eyes per group were included in the study. Femtosecond laser capsulotomy was performed with three different pulse energy levels: 2 µJ (low energy group), 5 µJ (intermediate energy group), and 10 µJ (high energy group). The capsule openings were stretched with universal testing equipment until they ruptured. The morphologic profile of the cut capsule edges was evaluated using scanning electron microscopy. The high energy group had significantly lower rupture force (108 ± 14 mN) compared to the intermediate energy group (118 ± 10 mN) (P < .05) and low energy group (119 ± 11 mN) (P < .05), but the difference between the intermediate energy and low energy groups was not significant (P = .9479). The high energy group had significantly lower circumference stretching ratio (144% ± 3%) compared to the intermediate energy group (148% ± 3%) (P < .05) and low energy group (148% ± 3%) (P < .05), but the difference between the intermediate energy group and low energy group was not significant (P = .9985). Scanning ...Continue Reading

References

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Jun 5, 2012·Acta Biomaterialia·Young Jae ParkDae Won Moon
Oct 1, 2013·Journal of Cataract and Refractive Surgery·Leonardo MastropasquaDonato Di Iorio
Oct 3, 2013·Ophthalmology·Robin G AbellBrendan J Vote
Jan 7, 2014·Graefe's Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Für Klinische Und Experimentelle Ophthalmologie·Thomas KohnenWolfgang J Mayer
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Aug 5, 2014·Journal of Cataract and Refractive Surgery·Chandra BalaKerrie Meades

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Citations

Sep 28, 2015·Survey of Ophthalmology·Dilraj S GrewalH Burkhard Dick
Sep 28, 2016·American Journal of Ophthalmology·Soon-Phaik CheeAliza Jap
Jul 27, 2017·Vestnik oftalmologii·K S AvetisovI V Khaydukova
Aug 7, 2017·Asia-Pacific Journal of Ophthalmology·Joobin Hooshmand, Brendan J Vote
Jun 9, 2020·European Journal of Ophthalmology·Piotr Kanclerz, Jorge L Alio
Oct 11, 2017·Journal of Refractive Surgery·Fritz H HengererIna Conrad-Hengerer
Feb 25, 2020·Journal of the Mechanical Behavior of Biomedical Materials·K S AvetisovP S Timashev

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