Innovations in Femtosecond Laser Technology – The Use of the WaveLight® FS200 Laser for Flap Cutting during LASIK Surgery

2010 ◽  
Vol 04 (01) ◽  
pp. 40
Author(s):  
Anastasios John Kanellopoulos ◽  
Keyword(s):  
Femtosecond Laser ◽  
Energy Requirement ◽  
Corneal Stroma ◽  
Superior Performance ◽  
Patient Comfort ◽  
Procedure Time ◽  
Laser Technology ◽  
The Past ◽  
Laser Systems

Laser-assistedin situkeratomileusis (LASIK) involves the creation of a corneal flap and remodelling of the corneal stroma. This conventionally used a mechanical microkeratome but these devices are associated with variations in the flaps produced. The development of femtosecond excimer laser technology over the past 10 years has markedly improved the safety and efficiency of flap cutting during LASIK and provides superior performance. The Wavelight® FS200 laser is a recent development in femtosecond laser systems. This instrument is calibrated when switched on and prior to application of the applanation cone to the cornea surface, ensuring consistency in flap cutting. The Wavelight FS200 laser has a rapid firing speed that reduces the energy requirement, makes flap lifting easier, reduces procedure time and improves patient comfort. The system also provides consistency of flap diameter and thickness and allows for individualisation of flap morphology based on the patient’s condition. This article discusses clinical experience with the Wavelight FS200 laser for flap cutting in LASIK surgery.

scholarly journals Rescue of Primary Incomplete Microkeratome Flap with Secondary Femtosecond Laser Flap in LASIK

2014 ◽  
Vol 2014 ◽  
pp. 1-4
Author(s):  
E. A. Razgulyaeva
Keyword(s):  
Case Report ◽  
Femtosecond Laser ◽  
Imaging Technique ◽  
Corneal Tissue ◽  
Ablation Procedure ◽  
Advanced Imaging ◽  
Laser Technology ◽  
The Creation ◽  
Excellent Tool

For laser-assisted in situ keratomileusis (LASIK) retreatments with a previous unsuccessful mechanical microkeratome-assisted surgery, some surgical protocols have been described as feasible, such as relifting of the flap or the creation of a new flap and even the change to a surface ablation procedure (photorefractive keratectomy (PRK)). This case shows the use of femtosecond technology for the creation of a secondary flap to perform LASIK in a cornea with a primary incomplete flap obtained with a mechanical microkeratome. As we were unable to characterize the interface of the first partial lamellar cut, a thick flap was planned and created using a femtosecond laser platform. As the primary cut was very thick in the nasal quadrant, a piece of loose corneal tissue appeared during flap lifting which was fitted in its position and not removed. Despite this condition and considering the regularity of the new femtosecond laser cut, the treatment was uneventful. This case report shows the relevance of a detailed corneal analysis with an advanced imaging technique before performing a secondary flap in a cornea with a primary incomplete flap. The femtosecond laser technology seems to be an excellent tool to manage such cases successfully.

Flap Technology Review—The Case for Femtosecond Laser Flaps in Laser In Situ Keratomileusis

2012 ◽  
Vol 05 (01) ◽  
pp. 18
Author(s):  
Ronald R Krueger ◽  
Richard Potvin ◽  
◽  
Keyword(s):  
Femtosecond Laser ◽  
Cleveland Clinic ◽  
Spot Size ◽  
Cleveland Clinic Foundation ◽  
Laser In Situ Keratomileusis ◽  
Complication Rates ◽  
Advantages And Disadvantages ◽  
Refractive Outcomes ◽  
Laser Systems

Purpose:To review the literature concerning the relative advantages and disadvantages of laser in situ keratomileusis (LASIK) flaps created with mechanical microkeratomes versus femtosecond laser systems.Setting:Cole Eye Institute, Cleveland Clinic Foundation, Cleveland, OH 44195.Methods:A review of the literature available related to mechanical microkeratomes and femtosecond laser systems was conducted. Operational limitations, complications, complication rates, and clinical outcomes were compared.Results:Data from the peer-reviewed literature showed that intra-operative complication rates were slightly higher with mechanical microkeratomes, and a training effect was evident. Complication rates with femtosecond laser systems have dropped as the laser spot size and/or energy has decreased and shot frequency has increased. Laser-created flaps showed lower variability in flap thickness and greater variety in programmable flap geometry. Spherocylindrical refractive outcomes were generally similar but higher order aberrations were reported as lower with femtosecond laser flap creation.Conclusion:There is now extensive evidence in the literature comparing these technologies. The results support current femtosecond laser technology as superior to mechanical microkeratomes for the creation of LASIK flaps in refractive surgery.

Femtosecond Lasers in Ophthalmology

2014 ◽  
Vol 08 (01) ◽  
pp. 37
Author(s):  
Duna A Raoof ◽  
Roni M Shtein ◽  
◽  
Keyword(s):  
Femtosecond Laser ◽  
Femtosecond Lasers ◽  
Corneal Transplantation ◽  
Laser Pulses ◽  
Full Thickness ◽  
Ophthalmic Surgery ◽  
Laser Technology ◽  
Ideal Tool ◽  
Flap Creation

The use of the femtosecond laser in ophthalmic surgery over the last decade has resulted in the development of innovative procedures. The ultra-short infrared laser pulses of the femtosecond laser can be applied precisely and predictably with minimal collateral tissue damage, making it an ideal tool for highly precise ophthalmic surgery. Flap creation in laserin situkeratomileusis (LASIK) is the most common use of this laser. It can also be used for other corneal refractive procedures, lamellar and full-thickness corneal transplantation and cataract surgery. This article summarises recent advanced applying femtosecond laser technology in ophthalmology.

Thin-flap laser in situ keratomileusis with femtosecond-laser technology

2013 ◽  
Vol 39 (9) ◽  
pp. 1366-1371 ◽  
Author(s):  
George D. Kymionis ◽  
George A. Kontadakis ◽  
Michael A. Grentzelos ◽  
Sophia I. Panagopoulou ◽  
Nela Stojanovic ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Laser In Situ Keratomileusis ◽  
Laser Technology

Use of Lasers in Cosmetic Surgery

1992 ◽  
Vol 9 (2) ◽  
pp. 131-140 ◽  
Author(s):  
Reuel A. Aspacio ◽  
Ronald G. Wheeland
Keyword(s):  
Surgical Procedures ◽  
Cosmetic Surgery ◽  
Laser Technology ◽  
The Past ◽  
Tissue Interactions ◽  
Laser Technologies ◽  
Laser Tissue Interaction ◽  
Laser Systems ◽  
Potential Benefits ◽  
Basic Concepts

Even though laser technology has been available for over 30 years, it has been only within the past 10–15 years that its applications have been exploited extensively for cosmetic surgical procedures. The expansion of laser technologies and applications is in part due to an improved knowledge of laser-tissue interaction, which has resulted in the development of many new and improved laser systems. With the large number of laser systems currently available, every cosmetic surgeon should have a working knowledge of the basic concepts of lasers, laser-tissue interactions, and the capabilities and limitations of each system, in order to maximize the potential benefits of laser systems in patient care.

Patient and surgeon experience during laser in situ keratomileusis using 2 femtosecond laser systems

2014 ◽  
Vol 40 (3) ◽  
pp. 423-429 ◽  
Author(s):  
Reece C. Hall ◽  
Mohamad Rosman ◽  
Cordelia Chan ◽  
Donald T.H. Tan ◽  
Jodhbir S. Mehta
Keyword(s):  
Femtosecond Laser ◽  
Laser In Situ Keratomileusis ◽  
Surgeon Experience ◽  
Laser Systems

scholarly journals Femtosecond Lasers in Ophthalmology

2013 ◽  
Vol 06 (01) ◽  
pp. 38 ◽  
Author(s):  
Duna Raoof-Daneshvar ◽  
Roni M Shtein ◽  
◽  
Keyword(s):  
Femtosecond Laser ◽  
Femtosecond Lasers ◽  
Corneal Transplantation ◽  
Laser Pulses ◽  
Full Thickness ◽  
Ophthalmic Surgery ◽  
Laser Technology ◽  
Ideal Tool ◽  
Flap Creation

The use of the femtosecond laser in ophthalmic surgery over the last decade has resulted in the development of innovative procedures. The ultra-short infrared laser pulses of the femtosecond laser can be applied precisely and predictably with minimal collateral tissue damage, making it an ideal tool for highly precise ophthalmic surgery. Flap creation in laserin situkeratomileusis (LASIK) is the most common use of this laser. It can also be used for other corneal refractive procedures, lamellar and full-thickness corneal transplantation, and cataract surgery. This article summarizes recent advanced applying femtosecond laser technology in ophthalmology.

Femtosecond Laser-assisted Cataract Surgery

2014 ◽  
Vol 07 (02) ◽  
pp. 82
Author(s):  
Michael Lawless ◽  
Chandra Bala ◽  
◽  
Keyword(s):  
Surgical Technique ◽  
Femtosecond Laser ◽  
Cataract Surgery ◽  
Current Literature ◽  
Efficacy And Safety ◽  
Laser Technology ◽  
The Past ◽  
Geometric Precision ◽  
Limited Precision ◽  
Difficult Cases

Despite improvements in surgical technique, certain aspects of manual cataract surgery are performed with limited precision. Femtosecond laser technology enables precise incisions in the cornea and minimizes manipulations and energy required to fragment and emulsify the lens, resulting in less damage to surrounding tissues compared with manual techniques. The technique also results in superior geometric precision and centration, with reported better capsule strength compared with manual capsulotomy. Femtosecond laser-assisted cataract surgery (FLACS) is particularly advantageous in difficult cases, including hypermature and white cataracts. However, it is still not known how technical advantages translate into functional benefits. Over the past 2 years, four unique laser platforms have been introduced. This article summarizes current literature relating to the efficacy and safety of FLACS and compares currently available laser platforms.

scholarly journals Comparison of 9.0 and 9.2 mm Flap Diameter Options of Femtosecond Laser In-Situ Keratomileusis for Hypermetropia and Hypermetropic Astigmatism

2019 ◽  
Vol 2019 ◽  
pp. 1-6
Author(s):  
Kemal Ozulken ◽  
Cagri Ilhan
Keyword(s):  
Femtosecond Laser ◽  
Spherical Aberration ◽  
Corneal Stroma ◽  
Laser In Situ Keratomileusis ◽  
High Order Aberration ◽  
Manifest Refraction ◽  
Registration Number ◽  
One Year ◽  
Q Values

Aim. To compare the postoperative one-year outcomes of asphericity (Q) and high order aberration (HOA) values of 9.0 and 9.2 mm diameter flap groups in hypermetropia and hypermetropic astigmatism subjects who underwent femtosecond laser in-situ keratomileusis (LASIK). Materials and Methods. The study included 68 eyes of 34 patients. A femtosecond laser platform (Allegrato Wave, Wavelight AG, Erlangen, Germany) was used for flap cutting. Corneal stroma was ablated using Wavelight EX500 with wavefront-optimized profile (WaveLight GmbH, Erlangen, Germany). 9.0 mm flap diameter was randomly chosen for one eye, and 9.2 mm flap diameter was chosen for the fellow eye. Two eyes of the patients who used two different flap diameters were enrolled into two different groups. Corneal stroma was ablated using Wavelight EX500 with wavefront-optimized profile (WaveLight GmbH, Erlangen, Germany). Postoperative one-year outcomes of Q and HOA values of 9.0 and 9.2 mm diameter flap groups were compared statistically. Results. The preoperative manifest refraction spherical equivalents of the 9.0 and 9.2 mm diameter flap groups were 1.86 ± 1.81 D and 1.69 ± 1.99 D (p=0.754). No intraoperative or postoperative complications were observed. At postoperative one-year, Q values were 0.98 ± 0.13 D and 0.91 ± 0.15 D (p=0.029). HOAs including horizontal and vertical coma, horizontal and vertical trefoil, spherical aberration, and second order vertical coma were not significantly different (p>0.05 for all). Total HOA values were 1.62 ± 0.14 and 1.40 ± 0.16, in the 9.0 and 9.2 mm diameter flap groups, respectively (p<0.001). Conclusion. Both the 9.0 and 9.2 mm diameter flap options in femtosecond LASIK are equally safe and effective. Many of the HOA values are similar in both options, and better results were provided in terms of total HOA and Q values with the 9.2 mm diameter flap option. This study was registered with trial registration number 118-011.

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