scholarly journals Comparison of Maximum Stretch Forces between Femtosecond Laser-Assisted Capsulotomy and Continuous Curvilinear Capsulorhexis

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Mari Takagi ◽  
Takashi Kojima ◽  
Kei Ichikawa ◽  
Yoshiki Tanaka ◽  
Yukihito Kato ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Femtosecond Laser ◽  
Cataract Surgery ◽  
Anterior Capsule ◽  
Variable Size ◽  
Edge Strength ◽  
Maximum Stretch ◽  
Lower Maximum ◽  
Over Time ◽  
Porcine Eyes

The current study reports comparing the postoperative mechanical properties of the anterior capsule between femtosecond laser capsulotomy (FLC) and continuous curvilinear capsulorhexis (CCC) of variable size and shape in porcine eyes. All CCCs were created using capsule forceps. Irregular or eccentric CCCs were also created to simulate real cataract surgery. For FLC, capsulotomies 5.3 mm in diameter were created using the LenSx® (Alcon) platform. Fresh porcine eyes were used in all experiments. The edges of the capsule openings were pulled at a constant speed using two L-shaped jigs. Stretch force and distance were recorded over time, and the maximum values in this regard were defined as those that were recorded when the capsule broke. There was no difference in maximum stretch force between CCC and FLC. There were no differences in circularity between FLC and same-sized CCC. However, same-sized CCC did show significantly higher maximum stretch forces than FLC. Teardrop-shaped CCC showed lower maximum stretch forces than same-sized CCC and FLC. Heart-shaped CCC showed lower maximum stretch forces than same-sized CCC. Conclusively, while capsule edge strength after CCC varied depending on size or irregularities, FLC had the advantage of stable maximum stretch forces.

Anterior capsule integrity after femtosecond laser–assisted cataract surgery

2015 ◽  
Vol 41 (5) ◽  
pp. 1109-1110 ◽  
Author(s):  
Timothy V. Roberts ◽  
Michael Lawless ◽  
Gerard Sutton ◽  
Chris Hodge
Keyword(s):  
Femtosecond Laser ◽  
Cataract Surgery ◽  
Anterior Capsule

Anterior capsule opacification after femtosecond laser–assisted cataract surgery: Clinical classification versus Scheimpflug device densitometry values

2016 ◽  
Vol 42 (6) ◽  
pp. 826-832
Author(s):  
Txomin Alberdi ◽  
Javier Mendicute ◽  
Lucía Bascarán ◽  
Nahia Goñi ◽  
Olatz Barandika ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Cataract Surgery ◽  
Clinical Classification ◽  
Anterior Capsule

scholarly journals Comparison of Diathermic high-frequency capsulorhexis and Femtosecond laser-assisted capsulorrhexis in white cataract surgery

2021 ◽  
Author(s):  
Licheng Fan ◽  
Liansheng Liu ◽  
Yanfeng Zeng ◽  
Haiyan Tian
Keyword(s):  
Femtosecond Laser ◽  
Prospective Study ◽  
Cataract Surgery ◽  
Surgical Procedures ◽  
High Frequency ◽  
Posterior Capsule ◽  
Anterior Capsule ◽  
Frequency Group ◽  
Posterior Capsule Tear ◽  
Post Operation

Abstract Aim: To compare the integrity, roundness and diameter of the capsulotomy in the white cataract between femtosecond laser assisted capsulotomy and high-frequency capsulorhexis.Methods: The prospective study included 32 patients with white-nuclear cataracts, 16 of whom underwent femtosecond capsulorhexis and another 16 underwent diathermic high-frequency capsulorhexis. The integrity roundness and diameter of the capsulorhexis post-operation were compared.Results: Femtosecond group obtained 6 cases(37.5%)of complete capsular. No anterior capsule tear occurred. Diathermy high-frequency achieved continuous complete capsulor in 3 eyes(18.75%) and anterior capsule was teared in 13 eyes(81.25%). The femtosecond group has a mean capsular diameter of 5.4 mm, and the diathermic high-frequency group has an average capsular diameter of 6 mm. No posterior capsule tear occurred in both surgical procedures. Conclusions: Femtosecond laser-assisted cataract surgery can achieve high capsulor integrity and stable capsulorhexis diameter. Compared with the diathermic high-frequency capsulorhexis, the frequency of injecting the viscoelastic agent was reduced, and the tear of the capsule was less likely to occur. The continuous complete capsular(CCC) by femtosecond laser is more round, more complete ,more controllable and smoother than diathermy high-frequency(DHC).

Intereye comparison of femtosecond laser–assisted cataract surgery capsulotomy and manual capsulorhexis edge strength

2017 ◽  
Vol 43 (4) ◽  
pp. 480-485 ◽  
Author(s):  
Thomas Chan ◽  
Ushasree Pattamatta ◽  
Mark Butlin ◽  
Kerrie Meades ◽  
Chandra Bala
Keyword(s):  
Femtosecond Laser ◽  
Cataract Surgery ◽  
Edge Strength

scholarly journals Femtolaser Systems in Congenital Cataract Surgery in Children

2019 ◽  
Vol 16 (1S) ◽  
pp. 45-48
Author(s):  
I. S. Zaidullin ◽  
Yu. K. Burkhanov
Keyword(s):  
Femtosecond Laser ◽  
Cataract Surgery ◽  
Congenital Cataract ◽  
Lens Capsule ◽  
Anterior Capsule ◽  
Visual Rehabilitation ◽  
Congenital Cataracts ◽  
Anterior Lens Capsule ◽  
Child Age ◽  
Congenital Cataract Surgery

Purpose. To study the features and results of femtolaser use in congenital cataract surgery in children. Patients and Methods. 35 children (37 eyes) with congenital cataracts aged from 12 months to 14 years (5.38 ± 6.3 years) were examined and surgical treated. The first stage of the operation included femtolaser execution of the anterior capsulorhexis (femtosecond laser Victus™ (Technolas Perfect Vision/Baush&Lomb, Germany). The second stage was the flap of the anterior capsule removal, the performance of hydrodissection, aspiration of lens masses, intracapsular implantation of the IOL. Results. In case of femtolaser capsulotomy, its diameter increased. It depended on the child age and the state of the anterior lens capsule. The obtained disc diameter of the anterior capsule in almost all eyes was significantly less than planned, due to its high elasticity in children. Conclusion. The use of a femtosecond laser in children with congenital cataracts, especially in infants, increase the effectiveness of visual rehabilitation. When conducting an anterior femtolaser capsulotomy in children with congenital cataract, it is necessary to take into account an increase in the diameter of the anterior capsulotomy, depending on child age and the condition of the anterior lens capsule. The first stage of surgery under local anesthesia in older children requires an individual approach.

Femtosecond laser-assisted cataract surgery for the white cataract

2018 ◽  
Vol 103 (4) ◽  
pp. 544-550 ◽  
Author(s):  
Soon-Phaik Chee ◽  
Nicole Shu-Wen Chan ◽  
Younian Yang ◽  
Seng-Ei Ti
Keyword(s):  
Femtosecond Laser ◽  
Cataract Surgery ◽  
Intraoperative Complications ◽  
Case Series ◽  
Anterior Capsule ◽  
Patient Demographics ◽  
Lens Thickness ◽  
Corrected Visual Acuity ◽  
Lens Fragmentation ◽  
Main Complication

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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