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Trial registered on ANZCTR
Registration number
ACTRN12611000376943
Ethics application status
Not yet submitted
Date submitted
12/04/2011
Date registered
12/04/2011
Date last updated
12/04/2011
Type of registration
Prospectively registered
Titles & IDs
Public title
Measuring Tear Flow after Tear Duct Repair
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Scientific title
Measuring the outflow of tears with the drop test from the surface of the eye in patients who have undergone tear duct repair
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Secondary ID [1]
259981
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Nil
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Universal Trial Number (UTN)
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Trial acronym
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Mono-canalicular (tear duct) repair
265605
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Condition category
Condition code
Eye
265752
265752
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0
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Diseases / disorders of the eye
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Injuries and Accidents
265756
265756
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0
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Other injuries and accidents
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Surgery
265757
265757
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0
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Surgical techniques
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Intervention/exposure
Study type
Observational
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Patient registry
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Target follow-up duration
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Target follow-up type
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Description of intervention(s) / exposure
Observational study with patients recruited over 1 year. Tear drainage is measured by the drop test. Measured aliquots of saline are placed on the ocular surface avoiding overflow for 3 minutes. After this period, any excess fluid is quantified. This test is performed 4 times, without punctal plugs, with both canaliculi occluded, and with one or other canaliculus occluded, in a randomised order.
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Intervention code [1]
264394
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Not applicable
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Comparator / control treatment
The unoperated fellow eye will serve as a control
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Control group
Uncontrolled
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Outcomes
Primary outcome [1]
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Tear drainage rate
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Assessment method [1]
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Timepoint [1]
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Measured over 3-minute period
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Secondary outcome [1]
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The level of epiphora (eye watering) experienced by participants on a daily basis since undergoing surgery will be graded on a 10 point scale
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Assessment method [1]
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Timepoint [1]
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Symptoms as defined above will be recorded at the time of review
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Eligibility
Key inclusion criteria
Surgical repair of the eyelid with canalicular silicone stenting within the last 5 years
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Minimum age
18
Years
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Maximum age
90
Years
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Sex
Both males and females
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Can healthy volunteers participate?
No
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Key exclusion criteria
Pre-existing dry eye or other anterior segment pathology
Significant eyelid tissue loss during trauma
Subsequent surgery on the tear drainage system (e.g DCR)
Systemic disease preventing the patient from lying flat for the duration of the test.
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Study design
Purpose
Natural history
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Duration
Cross-sectional
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Selection
Defined population
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Timing
Prospective
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Statistical methods / analysis
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Recruitment
Recruitment status
Not yet recruiting
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Date of first participant enrolment
Anticipated
10/05/2011
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Actual
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Date of last participant enrolment
Anticipated
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Actual
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Date of last data collection
Anticipated
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Actual
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Sample size
Target
20
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Accrual to date
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Final
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Recruitment outside Australia
Country [1]
3379
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New Zealand
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State/province [1]
3379
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Funding & Sponsors
Funding source category [1]
264856
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Self funded/Unfunded
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Name [1]
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University of Auckland
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Address [1]
264856
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Private Bag 92019
Auckland 1142
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Country [1]
264856
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New Zealand
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Funding source category [2]
264857
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Self funded/Unfunded
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Name [2]
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Department of Ophthalmology
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Address [2]
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University of Auckland
Private Bag 92019
Auckland 1142
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Country [2]
264857
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New Zealand
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Primary sponsor type
University
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Name
University of Auckland
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Address
Private Bag 92019
Auckland 1142
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Country
New Zealand
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Secondary sponsor category [1]
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Hospital
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Name [1]
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Auckland District Health Board
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Address [1]
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Greenlane Clinical Centre
214 Greenlane West
Epsom
Auckland 1051
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Country [1]
263955
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New Zealand
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Ethics approval
Ethics application status
Not yet submitted
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Ethics committee name [1]
266819
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Ethics committee address [1]
266819
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Ethics committee country [1]
266819
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Date submitted for ethics approval [1]
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12/04/2011
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Approval date [1]
266819
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Ethics approval number [1]
266819
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Summary
Brief summary
When people damage their tear ducts through trauma or accident the patient may have a watery eye afterwards for the rest of their life. The doctor may decide to repair the tear duct but repairing the tear duct can be difficult and we are unsure how much function the tear ducts have after repair. We would like to measure how well the tear ducts work in patients who have undergone surgical repair. We have previously looked at healthy volunteers and have established what normal tear drainage should be, for comparison (reference in publication list below)
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Trial website
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Trial related presentations / publications
Murgatroyd H, Craig JP, Sloan B. Determination of relative contribution of the superior and inferior canaliculi to the lacrimal drainage system in health using the drop test. Clin Experiment Ophthalmol. 2004 Aug;32(4):404-10
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Public notes
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Contacts
Principal investigator
Name
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Address
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Country
32472
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Phone
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Fax
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Email
32472
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Contact person for public queries
Name
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Jennifer P. Craig
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Address
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Department of Ophthalmology
University of Auckland
Private Bag 92019
Auckland
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Country
15719
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New Zealand
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Phone
15719
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6499238173
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Fax
15719
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Email
15719
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[email protected]
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Contact person for scientific queries
Name
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Jennifer P. Craig
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Address
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Department of Ophthalmology
University of Auckland
Private Bag 92019
Auckland
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Country
6647
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New Zealand
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Phone
6647
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6421853664
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Fax
6647
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Email
6647
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[email protected]
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No information has been provided regarding IPD availability
What supporting documents are/will be available?
No Supporting Document Provided
Results publications and other study-related documents
Documents added manually
No documents have been uploaded by study researchers.
Documents added automatically
No additional documents have been identified.
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