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Safety Study of a Contact Lens With Ketotifen in Healthy, Normal Volunteers

This study has been completed.
Sponsor:
ClinicalTrials.gov Identifier:
NCT00569777
First Posted: December 7, 2007
Last Update Posted: March 6, 2015
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Information provided by (Responsible Party):
Vistakon Pharmaceuticals
  Purpose
The purpose of this study is to evaluate the safety of a novel contact lens in healthy normal volunteers

Condition Intervention Phase
Allergic Conjunctivitis Device: K-Lens (generic name not established) and Ketotifen Device: Placebo Lens Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double (Participant, Investigator)
Primary Purpose: Basic Science
Official Title: A Multi-Center, Randomized, Double-Masked, Placebo-Controlled, Parallel-Group Study Evaluating the Safety of a Novel Contact Lens Used Daily in Healthy, Normal Volunteers

Resource links provided by NLM:


Further study details as provided by Vistakon Pharmaceuticals:

Primary Outcome Measures:
  • Lid and Lid Margin Erythema, Change From Baseline [ Time Frame: baseline and 12 weeks ]
    Assessment of lid redness using the following scale: 0=none, 1=mild, 2=moderate, 3=severe, 4=very severe.

  • Lid and Lid Margin Swelling, Change From Baseline [ Time Frame: baseline and 12 weeks ]
    Assessment of lid swelling using the following scale: 0=none, 1=mild, 2=moderate, 3=severe, 4=very severe.

  • Conjunctival Redness, Change From Baseline [ Time Frame: baseline and 12 weeks ]
    Assessment of redness of conjunctiva using the following scale: 0=none, 1=mild, 2=moderate, 3=severe, 4=very severe.

  • Conjunctival Chemosis, Change From Baseline [ Time Frame: baseline and 12 weeks ]
    Assessment of swelling of the conjunctiva using the following scale: 0=none, 1=mild, 2=moderate, 3=severe, 4=very severe.

  • Corneal Edema, Change From Baseline [ Time Frame: baseline and 12 weeks ]
    Assessment of corneal swelling using the following scale: 0=none, 1=mild, 2=moderate, 3=severe, 4=very severe.

  • Corneal Erosion, Change From Baseline [ Time Frame: baseline and 12 weeks ]
    Assessment of corneal erosion using the following scale: 0=none, 1=mild, 2=moderate, 3=severe.

  • Corneal Endothelial, Change From Baseline [ Time Frame: baseline and 12 weeks ]
    Assessment of the posterior cornea using the following scale: 0=none, 1=mild, 2=moderate, 3=severe, 4=very severe.

  • Lens Pathology, Change From Baseline [ Time Frame: baseline and 12 weeks ]
    Assessment of the clarity of the intraocular lens using the following scale: 0=none, 1=mild, 2=moderate, 3=severe, 4=very severe.

  • Flare in Anterior Chamber, Change From Baseline [ Time Frame: baseline and 12 weeks ]
    Assessment of visible protein in the anterior chamber using the following scale: 0=none, 1=mild, 2=moderate, 3=severe, 4=very severe.

  • Cells in Anterior Chamber, Change From Baseline [ Time Frame: baseline and 12 weeks ]
    Assessment of visible cells in the anterior chamber using the following scale: 0=none, 1=mild, 2=moderate, 3=severe, 4=very severe.

  • Corneal Staining - Nasal, Change From Baseline [ Time Frame: baseline and 12 weeks ]
    Assessment of changes to the surface of cornea, the region towards the nose, as evaluated by the degree of staining with sodium fluorescein solution, using the following scale: 0=none, 1=mild, 2=moderate, 3=severe, 4=very severe.

  • Corneal Staining - Temporal, Change From Baseline [ Time Frame: baseline and 12 weeks ]
    Assessment of changes to the surface of the cornea, the region towards the outer edge of the face, as evaluated by the degree of staining with sodium fluorescein solution, using the following scale: 0=none, 1=mild, 2=moderate, 3=severe, 4=very severe.

  • Corneal Staining - Inferior, Change From Baseline [ Time Frame: baseline and 12 weeks ]
    Assessment of changes to the surface of the cornea, the bottom region, as evaluated by the degree of staining with sodium fluorescein solution, using the following scale: 0=none, 1=mild, 2=moderate, 3=severe, 4=very severe.

  • Corneal Staining - Superior, Change From Baseline [ Time Frame: baseline and 12 weeks ]
    Assessment of changes to the surface of the cornea, upper region, as evaluated by the degree of staining with sodium fluorescein solution, using the following scale: 0=none, 1=mild, 2=moderate, 3=severe, 4=very severe.

  • Corneal Staining - Central, Change From Baseline [ Time Frame: baseline and 12 weeks ]
    Assessment of changes to the surface of the cornea, central region, as evaluated by the degree of staining with sodium fluorescein solution, using the following scale: 0=none, 1=mild, 2=moderate, 3=severe, 4=very severe.

  • Intraocular Pressure, Change From Baseline [ Time Frame: baseline and 12 weeks ]
  • Dilated Ophthalmoscopy - Fundus, Change From Baseline [ Time Frame: baseline and 12 weeks ]
    Assessment of changes in abnormalities on the back part of the eye, using the scale: 0=none, 0.5=trace, 1=mild, 2=moderate, 3=severe.

  • Dilated Ophthalmoscopy - Vitreous, Change From Baseline [ Time Frame: baseline and 12 weeks ]
    Assessment of changes in the vitreous (gel-like fluid of the eye), using the scale: 0=none, 0.5=trace, 1=mild, 2=moderate, 3=severe.

  • Visual Acuity Assessment [ Time Frame: at 12 weeks ]
    Visual acuity was assessed by the investigator using a Snellen visual acuity chart. This outcome counts the number of eyes that had vision of 20/40 or better at the 12 week visit.


Enrollment: 310
Study Start Date: October 2007
Study Completion Date: March 2008
Primary Completion Date: February 2008 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: K-lens
etafilcon A contact lens with ketotifen.
Device: K-Lens (generic name not established) and Ketotifen
combination drug-device product: contact lens (device) and anti-allergy drug
Placebo Comparator: Placebo
etafilcon A contact lens without ketotifen
Device: Placebo Lens
contact lens without drug

  Eligibility

Information from the National Library of Medicine

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, Learn About Clinical Studies.


Ages Eligible for Study:   8 Years and older   (Child, Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion Criteria:

  • healthy normal, soft contact lens wearing volunteers
  • normal ocular health
  • contact lens correction from +6.00 to -12.00D in each eye and astigmatism of -1.00D or less in each eye

Exclusion Criteria:

  • active ocular infection
  • history of ocular surgery
  • use of topical ophthalmic preparations (including rewetting drops)
  • pregnancy or lactation
  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00569777


Locations
United States, California
Gardena, California, United States, 90247
United States, Massachusetts
North Andover, Massachusetts, United States, 01845
United States, Tennessee
Memphis, Tennessee, United States, 38119
Sponsors and Collaborators
Vistakon Pharmaceuticals
Investigators
Study Director: Brian Pall, OD, MS, FAAO Johnson & Johnson Vision Care, Inc.
  More Information

Responsible Party: Vistakon Pharmaceuticals
ClinicalTrials.gov Identifier: NCT00569777     History of Changes
Other Study ID Numbers: 07-003-002
First Submitted: November 27, 2007
First Posted: December 7, 2007
Results First Submitted: October 4, 2010
Results First Posted: November 23, 2010
Last Update Posted: March 6, 2015
Last Verified: February 2015

Additional relevant MeSH terms:
Conjunctivitis
Conjunctivitis, Allergic
Conjunctival Diseases
Eye Diseases
Hypersensitivity, Immediate
Hypersensitivity
Immune System Diseases
Ketotifen
Antipruritics
Dermatologic Agents
Histamine H1 Antagonists
Histamine Antagonists
Histamine Agents
Neurotransmitter Agents
Molecular Mechanisms of Pharmacological Action
Physiological Effects of Drugs
Anti-Allergic Agents