Flap characteristics, predictability, and safety of the Ziemer FEMTO LDV femtosecond laser with the disposable suction ring for LASIK

Pietilä, J; Huhtala, A; Mäkinen, P; Uusitalo, H
January 2014
Eye;Jan2014, Vol. 28 Issue 1, p66
Academic Journal
AimsThe outcomes of laser-assisted in situ keratomileusis (LASIK) operations performed with the Classic FEMTO LDV femtosecond laser using the plastic single-use suction ring (Ziemer Ophthalmic Systems) and the Allegretto Wave Concerto 500 Hz excimer laser (Wavelight AG) are presented in terms of accuracy, predictability, and safety of the operation.MethodsA FEMTO LDV plastic suction ring was used for flap creation in 342 eyes of 179 patients. The intended flap thickness was 90 μm. The size of the suction ring varied from 9.0 to 10.0 mm. Flap dimensions were measured and correlated to preoperative characteristics.ResultsMean flap thickness was very constant, 89.6±2.0 μm (range 84-97). In 163 bilateral operations, the second flap was 1.1 μm thinner than the one cut first (P<0.0001). Mean flap diameter was 9.4±0.2 mm (range 8.1-9.9). Mean hinge length was 3.9±0.2 mm (range 3.0-4.2). In hyperopic eyes, flap thickness correlated negatively with keratometric power K1 and flap diameter. In hyperopic eyes, flap diameter correlated positively with spherical equivalent refraction and with keratometric power K1 as well as hinge length both in myopic and hyperopic eyes. Complications were reported in 12 (3.5%) eyes. Complications were very mild and none of them prevented further refractive laser treatment. Two Snellen lines of corrected distance visual acuity were lost in one (0.3%) eye.ConclusionThe FEMTO LDV plastic single-use suction rings yielded accurate and reproducible flaps and were safe for the creation of thin corneal flaps.


Related Articles

  • Single-use microkeratome consistently produces precise flaps. Pietilä, Juhani; Mäkinen, Petri // Ophthalmology Times;9/15/2004, Vol. 29 Issue 18, p72 

    Discusses the advantages of thin flaps in minimizing the risk of corneal ectasia in the United States. Flap dimensions; Cornea thickness; Flap quality.

  • Safety, outcomes of surface ablation versus lamellar surgery debated. Groves, Nancy; de Luise, Vincent P. // Ophthalmology Times;6/1/2008, Vol. 33 Issue 11, p50 

    The article discusses the safety issue regarding the outcomes of surface ablation and lamellar surgery. One argues that the methods in which a flap is created are more risky than surface procedures. However, one suggested that LASIK procedure is preferable due to risks associated with surface...

  • Indications for femtosecond lasers continue to expand. Lindstrom, Richard L. // Ocular Surgery News;6/10/2009, Vol. 27 Issue 11, p3 

    The article focuses on the femtosecond laser technology. According to the article, the technology evolved under the visionary leadership of IntraLase, a small U.S. company, into a laser device to create flaps for laser-assisted in-situ keratomileusis (LASIK) surgery. Based on studies by many...

  • Sutureless femtosecond anterior lamellar keratoplasty: A 1-year follow-up study. Shetty, Rohit; Nagaraja, Harsha; Veluri, Himabindu; Shivanna, Yathish; Kugar, Thungappa; Nujits, Rudy; Shetty, Bhujang // Indian Journal of Ophthalmology;Sep2014, Vol. 62 Issue 9, p923 

    Aim: To study the safety and efficacy of sutureless femtosecond anterior lamellar keratoplasty (FALK) in patients with corneal stromal opacities. Materials and Methods: Eleven eyes of 11 consecutive patients with corneal stromal opacities involving <250 µ due to various pathologies were...

  • Inverted side cut capability preserves corneal biomechanical strength. Cimberle, Michela // Ocular Surgery News;7/10/2009, Vol. 27 Issue 13, p15 

    The article reports that surgeon Jason Stahl has found that the new features of the 150-kHz iFS femtosecond laser from Abbott Medical Optics has allowed surgeons to create flaps that are specific to the patient's needs, in addition to preserving the biomechanical strength of the cornea...

  • Using Femtosecond Laser to Create Customized Corneal Flaps for Patients with Low and Moderate Refractive Error Differing in Corneal Thickness. Zhang, Chi; Che, Jingbin; Yu, Jianhong; Yu, Linli; Yu, Dan; Zhao, Gangping // PLoS ONE;Mar2015, Vol. 10 Issue 3, p1 

    This study is designed to evaluate the visual outcomes, accuracy, and predictability of corneal flaps with different thicknesses created by 60-kHz femtosecond laser according to different corneal thicknesses in the patients with low and moderate refractive error. A total of 182 eyes were divided...

  • Femtosecond laser may supplant scalpel in traditional applications. Hasson, Matt // Ocular Surgery News Europe;Feb2011, Vol. 22 Issue 2, p22 

    The article explores the applications of femtosecond laser for a variety of eye disorder correction procedures. It describes the use of femtosecond lasers for performing corneal procedures, including preparation of shaped corneal transplantation and creation of LASIK flaps. It also discusses...

  • How to Dodge Femto Flap Complications. Bethke, Walter // Review of Ophthalmology;Aug2013, Vol. 20 Issue 8, p72 

    The article offers suggestions from several surgeons regarding the management and avoidance of femtosecond flap complications. Scott MacRae recommends using the Ziemer femtosecond laser that uses a handpiece on an articulated arm to deliver the energy to the cornea. Brian Will says that he uses...

  • How to Hone Your Femtosecond Flaps. Bethke, Walter // Review of Ophthalmology;Oct2011, Vol. 18 Issue 10, p119 

    The article offers insights from refractive surgeons on how to get the best results of the use of femtosecond laser. Surendra Basti says that setting the machine to create reproducible flaps is the key in getting good flaps results, while Trevor Woodhams states that the user must adjust based on...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics