Creating LASIK Flaps With the LenSx Femtosecond Laser

The recruitment status of this study is unknown because the information has not been verified recently.
Verified March 2012 by Alcon LenSx, Inc..
Recruitment status was  Not yet recruiting
Information provided by (Responsible Party):
Alcon LenSx, Inc. Identifier:
First received: March 15, 2012
Last updated: March 16, 2012
Last verified: March 2012

This will be a prospective, single-center clinical trial of up to 50 eyes of subjects scheduled to undergo LASIK surgery requiring an initial corneal flap. Subjects will be screened for eligibility.

Subjects will undergo LASIK surgery using the LenSx Laser to create the corneal flap prior to excimer laser treatment.

Subjects will be evaluated intraoperatively to assess the ease of lifting the flaps, the stromal bed quality, and the amount of opaque bubble layer. All patients will be followed with routine vision exams for 3 months postoperatively to evaluate changes in visual acuity, manifest refraction, slit lamp examination, and endothelial cell counts.

Condition Intervention Phase
Device: LenSx Laser
Phase 1

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: Prospective, Single-center Clinical Trial of Subjects Scheduled to Undergo LASIK Surgery Requiring an Initial Corneal Flap.

Further study details as provided by Alcon LenSx, Inc.:

Primary Outcome Measures:
  • Ease of Lifting Flaps [ Time Frame: Operative ] [ Designated as safety issue: Yes ]

    0 - Unable to lift flap

    1. - Able to lift flap with aid of sharp instrument
    2. - Able to lift flap with difficulty using blunt instrument
    3. - Able to lift flap with moderate resistance using blunt instrument
    4. - Able to lift flap with minimal resistance using blunt instrument
    5. - Able to lift flap without any resistance using blunt instrument (Scale)

Secondary Outcome Measures:
  • Stromal Bed Quality [ Time Frame: Operative ] [ Designated as safety issue: Yes ]

    0 - very rough

    1- moderately rough 2 - rough 3 - smooth 4 - moderately smooth 5 - very smooth (Scale)

Estimated Enrollment: 50
Study Start Date: April 2012
Intervention Details:
    Device: LenSx Laser
    The LenSx laser system is a femtosecond laser that has received 510(k) clearance for anterior capsulotomy during cataract surgery (K082947), laser phacofragmentation during cataract surgery (K094052) and for use in the creation of a single and multi-plane arc cut/incisions in the cornea (K092647).

Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  1. Must have myopia or hyperopia eligible for femtosecond initiated LASIK surgery
  2. Must be over 18 years of age
  3. Must have visual acuity correctable to at least 20/25 in both eyes
  4. If subject is a contact lens wearer, discontinuation of contact lens wear prior to preoperative exam (2 weeks prior for soft contact lenses, 4 weeks prior for rigid gas permeable contact lenses, and 8 weeks prior for hard contact lenses)
  5. Must be willing and able to return for scheduled follow up examinations through 3 months after surgery
  6. Must sign and be given a copy of the written Informed Consent form
  7. Postoperative refractive target is emmetropia

Exclusion Criteria:

  1. Known sensitivity to planned study concomitant medications
  2. Participation in any other ophthalmic drug or device clinical trial during the time of this clinical investigation
  3. Presenting any contraindications to femtosecond initiated LASIK
  4. Corneal thickness values that will result in residual bed less than 280 microns when flap resection and excimer ablation are calculated
  5. Irregular astigmatism, based on Investigator's judgment
  6. Undergoing monovision LASIK
  7. Pregnant, lactating or plan to become pregnant during the course of this study
  8. For bilateral second study eyes only: The surgeon shall not proceed with the second eye until the 1 week exam of the first eye shows no vision threatening complications.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01556893

Contact: Melvin Sarayba, MD 1.800.757.9785

Department of Ophthalmology, Semmelweis University Not yet recruiting
Budapest, Hungary, 1085
Contact: Zoltan Z Nagy, MD    011-36-20-815-8468   
Principal Investigator: Zoltan Z Nagy, MD         
Sponsors and Collaborators
Alcon LenSx, Inc.
  More Information

No publications provided

Responsible Party: Alcon LenSx, Inc. Identifier: NCT01556893     History of Changes
Other Study ID Numbers: CS-004f
Study First Received: March 15, 2012
Last Updated: March 16, 2012
Health Authority: Hungary: Research Ethics Medical Committee
Hungary: Institutional Ethics Committee

Keywords provided by Alcon LenSx, Inc.:
Flap Creation
Femtosecond Laser
corneal flap prior to LASIK procedure processed this record on October 20, 2014