Comparison of the Effects of Two Glaucoma Drugs Over 24 Hours (0507A-137)(COMPLETED)

This study has been completed.
Information provided by (Responsible Party):
Merck Sharp & Dohme Corp. Identifier:
First received: April 12, 2005
Last updated: May 12, 2015
Last verified: May 2015
This study is comparing 2 medications for glaucoma and how effective they are at controlling glaucoma over the course of an entire day.

Condition Intervention Phase
Ocular Hypertension
Drug: MK0507A, dorzolamide hydrochloride (+) timolol maleate
Drug: Comparator: timolol maleate
Drug: Duration of Treatment: Part 1) 6 wk timolol maleate run in
Drug: Part 2) 6 wk washout pd Part 3) two 8 wk active tx pds
Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Crossover Assignment
Masking: Double Blind (Subject, Investigator)
Primary Purpose: Treatment
Official Title: Randomized, Multicenter, Dbl-Masked, Parallel Study Evaluating the 24 Hr. Diurnal Ocular Hypotensive Effect of 2% Dorzolamide Hydrochloride/0.5% Timolol Maleate Combo. Ophthalmic Sol. in Patients w/ Open Angle Glaucoma or Ocular Hypertension

Resource links provided by NLM:

Further study details as provided by Merck Sharp & Dohme Corp.:

Primary Outcome Measures:
  • 24 hour diurnal IOP reduction after 8 weeks of treatment [ Time Frame: After 8 weeks of treatment ] [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • IOP reduction a) from baseline at 6 weeks; b) comparison with timolol; c) comparison day versus night [ Time Frame: At 6 weeks ] [ Designated as safety issue: No ]

Enrollment: 330
Study Start Date: April 2005
Study Completion Date: July 2006
Primary Completion Date: July 2006 (Final data collection date for primary outcome measure)

Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Patients with glaucoma or ocular hypertension

Exclusion Criteria:

  • Other eye conditions
  • Poor vision
  • Recent eye surgery
  • Use of contact lenses
  • Nursing or pregnant women
  • Use of some other selected medications
  • Drug or alcohol abuse
  • Asthma
  • Slow heart beat
  • Allergy or previous reaction to study drugs
  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: NCT00108017

Sponsors and Collaborators
Merck Sharp & Dohme Corp.
Study Director: Medical Monitor Merck Sharp & Dohme Corp.
  More Information

Responsible Party: Merck Sharp & Dohme Corp. Identifier: NCT00108017     History of Changes
Other Study ID Numbers: 0507A-137  2005_021 
Study First Received: April 12, 2005
Last Updated: May 12, 2015
Health Authority: United States: Food and Drug Administration

Keywords provided by Merck Sharp & Dohme Corp.:
Ocular hypertension (excessive pressure in the eye)

Additional relevant MeSH terms:
Ocular Hypertension
Cardiovascular Diseases
Eye Diseases
Vascular Diseases
Maleic acid
Adrenergic Agents
Adrenergic Antagonists
Adrenergic beta-Antagonists
Anti-Arrhythmia Agents
Antihypertensive Agents
Carbonic Anhydrase Inhibitors
Cardiovascular Agents
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Neurotransmitter Agents
Pharmacologic Actions
Physiological Effects of Drugs
Therapeutic Uses processed this record on May 03, 2016