Effect of lens thickness and nuclear density on the amount of laser fragmentation energy delivered during femtosecond laser–assisted cataract surgery

2019 ◽  
Vol 45 (4) ◽  
pp. 485-489 ◽  
Author(s):  
Mohamed Gamil Aly ◽  
Abdelrhman Shams ◽  
Yousef A. Fouad ◽  
Ismail Hamza
2019 ◽  
Vol 34 (6) ◽  
pp. 1229-1234 ◽  
Author(s):  
Mehdi Shajari ◽  
Vladimir Rusev ◽  
Wolfgang Mayer ◽  
Vasilios Diakonis ◽  
Kerstin Petermann ◽  
...  

2018 ◽  
Vol 103 (4) ◽  
pp. 544-550 ◽  
Author(s):  
Soon-Phaik Chee ◽  
Nicole Shu-Wen Chan ◽  
Younian Yang ◽  
Seng-Ei Ti

Aim To report the capsulotomy and lens fragmentation outcomes of white cataracts managed with the femtosecond laser (FL).Methods Outcomes of a prospective, observational consecutive case series of white cataracts (June 2012–November 2016) that underwent FL-assisted cataract surgery (FLACS) (Victus, Bausch+Lomb, Munich, Germany) at the Singapore National Eye Centre were audited. Data collected: patient demographics, type of white cataract, levelness of docking, anterior capsule position following laser, completeness of capsulotomy and fragmentation, best-corrected visual acuity (BCVA) at 1 month, intraoperative complications. Outcome measures: capsulotomy integrity, fragmentation capability and BCVA at 1 month.Results 58 eyes of 54 patients underwent FLACS. White cataract types included dry white (24 eyes), intumescent (28 eyes) and Morgagnian (6 eyes). Docking was level in 22 eyes (38.6%). Following FL, the anterior capsule level dropped in 20 eyes (34.5%). Incomplete capsulotomies occurred in 10 eyes (17.2%). Lens fragmentation attempted in 38 eyes was effective or partially effective in 31 eyes (81.6%). No anterior or posterior capsule tears occurred. LogMAR BCVA at 1 month was 0.073 (SD 0.09). Risk factors for incomplete capsulotomy were Morgagnian cataract and lens thickness (multiple logistic regression, p<0.01 and p=0.03, respectively).ConclusionThe main complication of FLACS in white cataracts was incomplete capsulotomy (17.2%), significantly associated with Morgagnian cataracts and increased lens thickness. Lens fragmentation was effected in four-fifths of white cataracts but should be avoided in Morgagnian cataracts due to possible overlap of the lens fragmentation plan and the anterior capsule.


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