A Prospective Safety and Effectiveness Study of a New High Repetition Rate Excimer Laser Using LASIK for the Correction of Ammetropia and Presbyopia

This study is not yet open for participant recruitment. (see Contacts and Locations)
Verified April 2014 by Technolas Perfect Vision GmbH
Sponsor:
Information provided by (Responsible Party):
Technolas Perfect Vision GmbH
ClinicalTrials.gov Identifier:
NCT02112968
First received: April 10, 2014
Last updated: NA
Last verified: April 2014
History: No changes posted
  Purpose

This clinical study has been planned to evaluate the safety and effectiveness of common treatment algorithms using 500 Hz laser repetition rate for the correction of Ammetropia and Presbyopia


Condition Intervention Phase
Myopia
Hyperopia
Presbyopia
Procedure: Proscan
Procedure: Zyoptix
Procedure: Supracor
Phase 4

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment

Further study details as provided by Technolas Perfect Vision GmbH:

Primary Outcome Measures:
  • For Proscan and Zyoptix: - The percentage of treated eyes within +/- 0.50D of target refraction. For Supracor: - The percentage of treated eyes with a best corrected high contrast distance VA of Snellen 20/25 (6/7.5 or 0.1 logMAR) or better [ Time Frame: Myopia: 6 months, Hyperopia 12 months ] [ Designated as safety issue: No ]

Estimated Enrollment: 97
Study Start Date: April 2014
Estimated Primary Completion Date: June 2014 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Proscan
Ametropia Lasik treatment of virgin eyes.
Procedure: Proscan
One device (500 Hz Excimer Laser) with three interventions (Proscan, Zyoptix and Supracor as algorithms)
Experimental: Zyoptix
Wavefront based ametropia Lasik treatment of virgin eyes.
Procedure: Zyoptix
One device (500 Hz Excimer Laser) with three interventions (Proscan, Zyoptix and Supracor as algorithms)
Experimental: Supracor
Ametropia Lasik treatment of virgin eyes with presbyopia.
Procedure: Supracor
One device (500 Hz Excimer Laser) with three interventions (Proscan, Zyoptix and Supracor as algorithms)

Detailed Description:

This clinical study has been planned to evaluate the safety and effectiveness of the excimer laser treatment algorithms Proscan, Zyoptix and Supracor of the 500 Hz laser system for ametropia and/or presbyopia when performed on the cornea of virgin eyes.

  Eligibility

Ages Eligible for Study:   18 Years to 85 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Subjects have to be at least 18 years of age.
  • Subjects have to be able to read, understand, and sign a statement of Informed Consent (be given a copy of the signed Informed Consent Form (ICF).
  • Subjects have to be willing and able to return for scheduled follow-up examinations for up to 6 respectively 12 months after surgery.
  • For Proscan and Zyoptix Treatments the myopic subjects require a sphere between -0.5 D up to a maximum sphere of -10.0 D. If the patient has a refractive astigmatism to be treated, this must be between -0.5 D up to -4.0 D (not corneal astigmatism) as expressed in spectacle minus cylinder form (by manifest subjective refraction). Overall the SE for myopes must be no more than -12.0 D.
  • The Hyperopic subjects require a sphere between +0.5 D up to a maximum sphere of +4.0 D. If the patient has a refractive astigmatism to be treated, this must be between +0.5 D up to +4.0 D (not corneal astigmatism) as expressed in spectacle plus cylinder form (by manifest subjective refraction). Overall the SE for hyperopes must be no more than +6.0 D.
  • Subjects who are contact lens wearers must have gas permeable lenses discontinued for at least 3 weeks and soft lenses discontinued for at least 1 week prior to the pre-operative evaluation in the eye to be treated.
  • Corneal topography should be qualified.
  • Subjects who are contact lens wearers must have two (2) central keratometry readings and two (2) manifest subjective refractions taken pre-operatively at least one week apart. The refraction values must not differ by more than 0.50 D as defined by manifest refraction spherical equivalent (MRSE). The keratometry values must not differ from the previous values by more than 0.50 D in either meridian.
  • High contrast, manifest, best spectacle-corrected distance visual acuity correctable binocular to at least 1.0 (Snellen 20/20 or 6/6) and monocular to at least 0.8 (Snel-len 20/25 or 6/7.5). In case of a monocular surgery the eye which should not be treated must have a best corrected distance visual acuity of at least 0.8 (Snellen 20/25 or 6/7.5).
  • For treatments with the SUPRACOR presbyopic algorithm, subjects have to be at least 45 years old and no more than 85 years.
  • For treatments with the SUPRACOR presbyopic algorithm, subjects must have presbyopia as determined by an age-related need for optical aid (> +1.50 D) for reading with their best distance correction and been screened successfully for acceptance of the SUPRACOR simulation.
  • For treatments with the SUPRACOR presbyopic algorithm, subjects must been screened successfully for acceptance of the SUPRACOR simulation
  • For treatments with the SUPRACOR presbyopic algorithm, Myopic subjects must have up to -7.0 diopters (D) of absolute spherical myopia (not spherical equivalent), with up to -4.0 D of refractive astigmatism (NOT corneal astigmatism) by manifest subjective refraction. The spherical equivalent and must be no more than -9.0 D.
  • Hyperopic subjects must have up to +4 diopters (D) of absolute spherical hyperopia (not spherical equivalent), with up to +2.5 D of refractive astigmatism (NOT corneal astigmatism) by manifest subjective refraction in both eyes. The spherical equivalent must be no more than +5.25 D.
  • Mesopic pupil size measured with the Zywave II WaveFront Aberrometer must be < 7.0 mm and photopic pupil size measured with the Orbscan II/ IIz must be > 2.9 mm.
  • For treatments with the Zyoptix algorithm, the high-order-aberration must be at least 0.35µm.

Exclusion Criteria:

  • Subjects for whom the combination of their baseline corneal thickness and the planned operative parameters for the LASIK procedure would result in less than 250 microns of remaining posterior corneal thickness below the flap postoperatively.
  • Hyperopic eyes for which the baseline manifest subjective refraction exhibits a difference of greater than ± 0.75 D in sphere power, or a difference of greater than ± 0.50 D in cylinder power, or a difference in cylinder axis of more than 15 degrees compared to the baseline cycloplegic subjective refraction. For manifest cylinder of less than ±0.75 D, the difference in cylinder axis would not be taken into consideration.
  • Any subject who is going to be co-managed by an ophthalmologist or optometrist who were not approved as a Technolas Perfect Vision Investigator.
  • Subjects with anterior segment pathology, including dry eye syndrome and cataracts, which in the Investigator's opinion would interfere with best spectacle-corrected visual acuity or a successful treatment.
  • Subjects with evidence of retinal vascular disease.
  • Subjects with any residual, recurrent, or active ocular disease, or corneal abnormality that in the Investigator's opinion would interfere with BSCVA or a successful treatment.
  • Subjects with signs of keratoconus.
  • Subjects with unstable central keratometry readings with irregular mires.
  • Subjects who had previous intraocular or corneal surgery of any kind, including any type of Excimer laser surgery for either refractive or therapeutic purposes.
  • Subjects who have a history of Herpes simplex or Herpes zoster keratitis.
  • Subject who have a history of glaucoma or glaucoma suspect.
  • Subjects with corneal edema, or increased IOP > 22mmHg.
  • Subjects at risk for angle closure.
  • Subjects immunocompromised or carrying diagnosis of connective tissue disease, clinically significant atopic disease, diabetes, autoimmune diseases and other acute or chronic illnesses that will increase the risk to the subject or confound the outcomes of this study.
  • Subject taking systemic medications likely to affect wound healing such as corticosteroids or antimetabolites.
  • Subjects who are known to be pregnant, lactating, or who plans to become pregnant over the course of the study.
  • Subjects with known sensitivity to medications used for standard LASIK.
  • Subjects participating in any other ophthalmic clinical trials during this clinical study.
  • Subjects with an ocular muscle disorder including a strabismus or nystagmus, or other disorders affecting fixation.
  • Subjects with cognitive impairments or other vulnerable persons.
  • Subjects with anterior or posterior synechiae.
  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 ClinicalTrials.gov identifier: NCT02112968

Contacts
Contact: Melanie Doerner +49 89 94004130 melanie.doerner@bausch.com
Contact: Patrick Schmidt +49 89 94004391 patrick.schmidt@bausch.com

Sponsors and Collaborators
Technolas Perfect Vision GmbH
Investigators
Principal Investigator: Pavel Stodulka, M.D. Gemini ocni centrum
  More Information

No publications provided

Responsible Party: Technolas Perfect Vision GmbH
ClinicalTrials.gov Identifier: NCT02112968     History of Changes
Other Study ID Numbers: 1302
Study First Received: April 10, 2014
Last Updated: April 10, 2014
Health Authority: Czech: Ethics Committee

Keywords provided by Technolas Perfect Vision GmbH:
Myopia
Hyperopia
Presbyopia
Supracor
Zyoptix
Proscan
LASIK

Additional relevant MeSH terms:
Presbyopia
Hyperopia
Refractive Errors
Eye Diseases

ClinicalTrials.gov processed this record on October 19, 2014