Article

Initial clinical evaluation of an intraocular femtosecond laser in cataract surgery.

1st Department of Ophthalmology, Semmelweis University, Budapest, Hungary.
Journal of refractive surgery (Thorofare, N.J.: 1995) (Impact Factor: 2.78). 12/2009; 25(12):1053-60. DOI: 10.3928/1081597X-20091117-04
Source: PubMed

ABSTRACT To evaluate femtosecond laser lens fragmentation and anterior capsulotomy in cataract surgery.
Anterior capsulotomy and phacofragmentation procedures performed with an intraocular femtosecond laser (LenSx Lasers Inc) were initially evaluated in ex vivo porcine eyes. These procedures were then performed in an initial series of nine patients undergoing cataract surgery. In addition to standard intraoperative assessments (including capsulotomy diameter accuracy and reproducibility), optical coherence tomography was used to evaluate human procedures.
For an intended 5-mm capsulorrhexis in porcine eyes, average achieved diameters were 5.88+/-0.73 mm using a standard manual technique and 5.02+/-0.04 mm using the femtosecond laser. Scanning electron microscopy revealed equally smooth cut edges of the capsulotomy with the femtosecond laser and manual technique. Compared to control porcine eyes, femtosecond laser phacofragmentation resulted in a 43% reduction in phacoemulsification power and a 51% decrease in phacoemulsification time. In a small series of human clinical procedures, femtosecond laser capsulotomies and phacofragmentation demonstrated similarly high levels of accuracy and effectiveness, with no operative complications.
Initial results with an intraocular femtosecond laser demonstrate higher precision of capsulorrhexis and reduced phacoemulsification power in porcine and human eyes.

1 Follower
 · 
165 Views
  • [Show abstract] [Hide abstract]
    ABSTRACT: To assess capsulotomy enlargement after femtosecond laser treatment in pediatric cataract surgery and to assess the possible relationship to the patient's age. Ruhr University Eye Hospital, Bochum, Germany. Prospective case series. Anterior and posterior laser capsulotomies were performed in cases of pediatric cataract. The Pearson correlation coefficient (r) was used to evaluate the relationship between the programmed capsulotomy diameter and the achieved capsulotomy diameter. Linear bivalent regression analysis was used to describe the extent to which the capsulotomy enlargement factor was age dependent. Twenty-two eyes of 18 children were included in the trial. The mean age was 9.2 years ± 6.08 (SD) (range 0.17 to 18.0 years). The enlargement factors of the capsulotomies showed a highly significant negative correlation with patient age (r = -0.863; P < .001). In particular, younger children had a distinct deviation from the target diameter. Using linear bivalent regression analysis, an age-depending correction formula was developed. The Bochum formula for pediatric laser capsulotomies helped minimize the age-dependent deviation from the targeted diameter. Anterior and posterior laser capsulotomies in children were safe to perform. No author has a financial or proprietary interest in any material or method mentioned. Copyright © 2015 ASCRS and ESCRS. Published by Elsevier Inc. All rights reserved.
    Journal of Cataract and Refractive Surgery 04/2015; 41(4):821-826. DOI:10.1016/j.jcrs.2014.08.032 · 2.55 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: In the past few years, 9 unique laser platforms have been brought to the market. As femtosecond (FS) laser-assisted ophthalmic surgery potentially improves patient safety and visual outcomes, this new technology indeed provides ophthalmologists a reliable new option. But this new technology also poses a range of new clinical and financial challenges for surgeons. We provide an overview of the evolution of FS laser technology for use in refractive and cataract surgeries. This review describes the available laser platforms and mainly focuses on discussing the development of ophthalmic surgery technologies.
    International Journal of Ophthalmology 01/2015; 8(2):419-26. DOI:10.3980/j.issn.2222-3959.2015.02.36 · 0.50 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: This case report a rare case of 67-year-old man, presented with Marfan’s syndrome, cataract and crystalline lens dislocation of the left eye. The best corrected visual acuity (BCVA) of the left eye was 0.2. Cataract surgery was asissted by femtosecond laser LenSx. One month after surgery uncorrected visual acuity (UCVA) of the left eye was 0.9, BCVA with sph. +1.5 was 1.0. Intraocular lens have perfectly centered in the eye. Femtosecond laser is a significant improvement in surgery of patients with Marfan syndrome. Femtosecond laser is a significant improvement in surgery of patients with Marfan syndrome.
    01/2015; 06(02). DOI:10.4172/2155-9570.1000426

Preview

Download
5 Downloads
Available from