Assessment of Alcon's Ocular Image Quantification System

December 16, 2012 updated by: Alcon Research

A Study to Assess Alcon's Ocular Image Quantification Using Conjunctival Allergan Provocation Testing (CAPT) and Natural Allergen Exposure in an Environmental Exposure Chamber (EEC)

The purpose of this study was to evaluate ocular responses with different allergen provocation methods.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Subjects demonstrating a successful allergen response to a common allergen received the first study treatment and used as instructed for 5 days, after which they entered the Environmental Exposure Chamber (EEC) for a 3-hour exposure to a known concentration of the allergen. After waiting at least 7 days, subjects received the second study treatment and used as instructed for 5 days, after which a 3-hour Conjunctival Allergen Provocation Test (CAPT) was performed with an escalating concentration of the allergen. Subjects dosed with study treatment approximately 15 minutes prior to each allergen provocation test.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
13

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 4

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Texas
      • Fort Worth, Texas, United States, 76134
        • Contact Alcon Call Center for Trial Locations

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 65 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • History of allergic conjunctivitis;
  • Active signs and symptoms of ocular allergies;
  • Other protocol-defined inclusion criteria may apply.

Exclusion Criteria:

  • History of dry eye;
  • Presence of ocular infection;
  • Presence of severe or serious ocular conditions;
  • Symptoms of allergic conjunctivitis;
  • Use of topical or systemic ocular medications as specified in protocol;
  • Ocular surgery or laser surgery within 6 months of study start;
  • Unwilling to discontinue contact lens wear 72 hours prior to Visit 1 and during study period;
  • Other protocol-defined exclusion criteria may apply.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Diagnostic
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Patanol
One drop twice daily in each eye for five days prior to allergen provocation testing, followed by an additional drop in each eye approximately 15 minutes prior to start of testing.
Drug: Olopatadine hydrochloride, 0.1% ophthalmic solution (Patanol)
One drop twice daily in each eye for 5 days, followed by an additional drop in each eye prior to allergen test.
Other Names:
  • Patanol®
Placebo Comparator: Tears Naturale II
One drop twice daily in each eye for five days prior to allergen provocation testing, followed by an additional drop in each eye approximately 15 minutes prior to start of testing.
Other: Dextran 70 0.1%, hydroxypropyl methylcellulose 0.3% (Tears Naturale II)
One drop twice daily in each eye for 5 days, followed by an additional drop in each eye prior to allergen test.
Other Names:
  • Tears Naturale II

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Change From Baseline in Patient-Assessed Ocular Itching, Environmental Exposure Chamber (EEC), at 3 Hours
Time Frame: Baseline, 3 hours
As assessed by the participant after 3 hours in the EEC. Ocular itching was graded on a 0-4 scale, where 0=none, 1=tickling sensation involving one or more corners of the eye, 2=all over tickling sensation; 3=moderate continuous itching with desire to rub; 4=severe itching with irresistible urge to rub.
Baseline, 3 hours
Change From Baseline in Patient-Assessed Ocular Itching, Conjunctival Allergen Provocation Test (CAPT), at 3 Hours
Time Frame: Baseline, 3 hours
As assessed by the participant after 3 hours of CAPT. Ocular itching was graded on a 0-4 scale, where 0=none, 1=tickling sensation involving one or more corners of the eye, 2=all over tickling sensation; 3=moderate continuous itching with desire to rub; 4=severe itching with irresistible urge to rub.
Baseline, 3 hours

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Alcon Research

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
December 1, 2010

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
March 1, 2011

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
March 1, 2011

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
January 20, 2011

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
January 21, 2011

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
January 24, 2011

Study Record Updates

Last Update Posted (Estimate)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
December 18, 2012

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
December 16, 2012

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
July 1, 2012

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • RDG-10-278

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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