Adherence With Fixed Versus Unfixed Glaucoma Therapy

December 16, 2020 updated by: AGP Konstas, Aristotle University Of Thessaloniki

A 3-month, Observational Study Investigating With Electronic Monitoring the Level of Adherence and Treatment Satisfaction With Latanoprost/Timolol Fixed Combination Versus Unfixed Therapy in Open-angle Glaucoma

A 6-month, parallel, non-interventional trial investigating the level of adherence and the impact of dosing in open-angle glaucoma patients who receive either unfixed therapy with latanoprost once in the evening and timolol twice daily, or latanoprost/timolol fixed combination therapy once in the evening. All patients participating in this observational study will be monitored for their adherence with the use of Medication Event Monitoring System (MEMS). At the end of treatment periods treatment satisfaction will be assessed with selected questions from the Treatment Satisfaction Survey-Intraocular Pressure survey. This study will monitor objectively, for the first time, adherence and intraocular pressure control with fixed versus unfixed therapy. Finally it will help us to elucidate the impact of dosing (once-a-day versus three-times-daily) on the level of adherence in glaucoma.

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.

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.
Observational

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.
132

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

  • Greece
      • Thessaloniki, Greece, 546 36
        • Glaucoma Unit, 1st University Department of Ophthalmology, AHEPA Hospital

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 80 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Probability Sample

Study Population

All patients who use latanoprost/timolol fixed combination therapy with once-a-day dosing in the evening

All patients already treated with timolol twice daily and latanoprost once in the evening

Description

Inclusion Criteria:

  • Patient is between 21-80 years old
  • Patient has ocular hypertension or open-angle glaucoma Patient receives therapy and is well controlled on fixed or unfixed latanoprost and timolol therapy
  • Untreated IOP >19 mm Hg <33 mm Hg at baseline (10:00 hour)
  • Open normal appearing angles
  • Patient had at least a 20% reduction vs untreated baseline on current therapy
  • Patient has early or moderate glaucoma (< 14 decibel; 0.8 or better cupping)
  • Distance best corrected Snellen visual acuity greater than 1/10

Exclusion Criteria:

  • Contraindication to timolol or prostaglandin therapy
  • History of lack of response to any medication (< 10%)
  • Patient does not understand the instructions and will not comply to medications
  • Patient can not attend follow up
  • Patient is a female of childbearing potential, or lactating mother
  • History of trauma, inflammation, surgery, past use of steroids (within 2 months), severe dry eyes and use of contact lenses
  • Sign of ocular infection
  • A corneal abnormality that may affect IOP measurements

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

  • Observational Models: Cohort
  • Time Perspectives: Prospective

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Treatment with fixed combination
Patients who receive treatment with latanoprost/timolol fixed combination
Treatment with unfixed therapy
Patients who receive latanoprost and timolol therapy

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
Rate of adherence
Time Frame: 6 months
Rate of asherence with fixed vs unfixed glaucoma therapy
6 months

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Ocular surface evaluation
Time Frame: 6 months
Objective and subjective signs of ocular surface health
6 months
Treatment satisfaction
Time Frame: 6 months
To document satisfaction with therapy this study will employ questions selected from a validated treatment satisfaction questionnaire (questions 10-15, Treatment Satisfaction Survey-Intraocular Pressure) as published by Day et al (Eye 2006; 20: 583-590). The survey will assess the level of satisfaction and overall quality-of-life with latanoprost/timolol fixed combination versus unfixed therapy in this study.
6 months

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.
Aristotle University Of Thessaloniki

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Pfizer

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Anastasios G Konstas, MD, PhD, Glaucoma Unit, 1st University Department of Ophthalmology

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 (Actual)

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.
May 1, 2009

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.
June 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.
July 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 20, 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 21, 2011

Study Record Updates

Last Update Posted (Actual)

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 17, 2020

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, 2020

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.
December 1, 2020

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.
  • NIS50/01/08

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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