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Trial registered on ANZCTR
Registration number
ACTRN12614000063617
Ethics application status
Approved
Date submitted
8/01/2014
Date registered
20/01/2014
Date last updated
20/01/2014
Type of registration
Prospectively registered
Titles & IDs
Public title
Visual performance assessment of prototype contact lenses in children and young adults
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Scientific title
Prospective, participant-masked, crossover dispensing clinical trial to assess visual performance of prototype contact lens designs compared to commercial contact lenses in children and young adults
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Secondary ID [1]
283869
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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:
Myopia
290853
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Condition category
Condition code
Eye
291214
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0
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Normal eye development and function
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Prospective, participant-masked, clinical trial where participants will wear prototype (test) and commercial (control) lenses bilaterally. Up to 6 contact lens designs will be assessed against commercial control lens. The 6 lens designs are the top performing designs based on the results of a non-dispensing pilot study, which assesses the short-term visual performance in adults. The designs differ by power variations across the lens surface. It is voluntary for all the participants to complete all six stages and no 'washout' is required between each stage. Participants will wear the lenses on a daily wear, daily disposable basis for up to 7 days before crossing over to the next lens design. Questionnaires will need to be completed on day 2, 4 and 6.
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Intervention code [1]
288544
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Treatment: Devices
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Comparator / control treatment
The commercial control lens (AirOptix Aqua single vision, Alcon) will be worn on a daily wear, daily disposable basis for up to 7 days
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Control group
Active
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Outcomes
Primary outcome [1]
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Visual Acuity using LogMAR chart
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Assessment method [1]
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Timepoint [1]
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Day 0 (at time of dispense); Day 7 (assessment visit)
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Primary outcome [2]
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Contrast Sensitivity using Pelli-Robson chart or equivalent
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Assessment method [2]
291208
0
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Timepoint [2]
291208
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Day 0 (at time of dispense); Day 7 (assessment visit)
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Secondary outcome [1]
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Subjective ratings from participants comparing prototype contact lenses and commercial control using numerical scales and Likert scales
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Assessment method [1]
306231
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Timepoint [1]
306231
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Day 0 (at time of dispense); Day 2/4/6 (take-home questionnaire); Day 7 (assessment visit)
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Eligibility
Key inclusion criteria
*Able to read and comprehend English and give informed consent as demonstrated by signing a record of informed consent or have a parent / guardian who is able to give informed consent on the participant’s behalf.
*Be between 7 and 18 years old (inclusive), male or female.
*Willing to comply with the wearing and clinical trial visit schedule as directed by the Investigator.
*Have ocular health findings considered to be “normal” and which would not prevent the participant from safely wearing contact lenses.
*Correctable to at least 6/12 (20/40) or better in each eye with contact lenses.
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Minimum age
7
Years
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Maximum age
18
Years
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Sex
Both males and females
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Can healthy volunteers participate?
Yes
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Key exclusion criteria
*Any pre-existing ocular irritation, injury or condition (including infection or disease) of the cornea, conjunctiva or eyelids that would preclude contact lens fitting and safe wearing of contact lenses.
*Any systemic disease that adversely affects ocular health e.g. diabetes, Graves disease, and auto immune diseases such as ankylosing spondylitis, multiple sclerosis, Sjogrens syndrome and systemic lupus erythematosus. Conditions such as systemic hypertension and arthritis do not automatically exclude prospective participants.
*Use of or a need for concurrent category S3 and above ocular medication at enrolment and/or during the clinical trial.
*Use of or a need for any systemic medication or topical medications which may alter normal ocular findings / are known to affect a participant’s ocular health / physiology or contact lens performance either in an adverse or beneficial manner at enrolment and/or during the clinical trial.
NB: Systemic antihistamines are allowed on an “as needed basis”, provided they are not used prophylactically during the trial and at least 24 hours before the clinical trial product is used.
*Eye surgery within 12 weeks immediately prior to enrolment for this trial.
*Previous corneal refractive or strabismus surgery.
*Any binocular vision problems which may be exacerbated with the use of the study products or prevent adequate use of the device such as amblyopia, strabismus, excessive phoria and accommodative or convergence difficulties.
*Contraindications to contact lens wear.
*Known allergy or intolerance to ingredients in any of the clinical trial products
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Study design
Purpose of the study
Treatment
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Allocation to intervention
Non-randomised trial
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Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
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Masking / blinding
Blinded (masking used)
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Who is / are masked / blinded?
The people receiving the treatment/s
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Intervention assignment
Crossover
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Other design features
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Phase
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Type of endpoint/s
Safety/efficacy
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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
28/01/2014
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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
25
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Accrual to date
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Final
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Recruitment in Australia
Recruitment state(s)
NSW
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Funding & Sponsors
Funding source category [1]
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Charities/Societies/Foundations
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Name [1]
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Brien Holden Vision Institute
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Address [1]
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Level 4, North Wing, RMB
Gate 14, Barker Street, University of New South Wales SYDNEY NSW 2052 AUSTRALIA
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Country [1]
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Australia
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Primary sponsor type
Charities/Societies/Foundations
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Name
Brien Holden Vision Institute
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Address
Level 4, North Wing, RMB
Gate 14, Barker Street, University of New South Wales SYDNEY NSW 2052 AUSTRALIA
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Country
Australia
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Secondary sponsor category [1]
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None
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Name [1]
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Address [1]
287220
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Country [1]
287220
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Ethics approval
Ethics application status
Approved
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Ethics committee name [1]
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Bellberry Limited
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Ethics committee address [1]
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129 Glen Osmond Rd Eastwood South Australia 5063
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Ethics committee country [1]
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Australia
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Date submitted for ethics approval [1]
290378
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Approval date [1]
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16/12/2013
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Ethics approval number [1]
290378
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Summary
Brief summary
Myopia (also known as near or short sightedness) is a condition of the eye where objects viewed in the distance appears blurred. Conventional methods of correcting this optical condition include spectacles and contact lenses. The rate of progression of myopia tends to be more rapid in the younger age and high degrees of myopia can lead to complications such as retinal degeneration and detachments, choroidal neovascular membranes and an increased risk of primary open angle glaucoma. Numerous studies have investigated different contact lens optical designs to correct and potentially treat myopia. One theory in the attempt to reduce myopia progression is to target the stimulus on the peripheral retina. Previous studies have shown that the peripheral retinal stimulus plays a role in myopia progression. It is now known that peripheral hyperopia, where the stimulus or focus falls behind the retina, can be a trigger for myopia progression. Myopic eyes tend to have peripheral hyperopia and unfortunately the design of conventional spectacles and contact lenses used to correct myopia, actually exacerbates this. Thus, in an attempt to minimise myopia progression, the optical design of contact lens should bring the focus from behind the retinal periphery to either on or in front of the retinal periphery. This concept has been tested in contact lenses previously and progression of myopia was found to be 34% less than when wearing spectacles only. Newer optical designs with this concept are required to be tested to enhance the myopic progression effect, however, as the lens designs are novel, myopic participants are required to test the lenses and ensure both vision and subjective acceptance of the lens prior to longer term assessments on the efficacy of these lenses. Previously conducted clinical studies assessed numerous prototype lenses after short-term (1.5 and 6 hours) lens wear compared to commercially available equivalent contact lenses in adults. The best performing prototype lenses from the short-term trial have been selected for further testing in the current study against the best performing commercial contact lenses for use in children and young adults.
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Trial website
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Trial related presentations / publications
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Public notes
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Contacts
Principal investigator
Name
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Ms Pauline Xu
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Address
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Brien Holden Vision Institute
Level 5, North Wing, RMB, Gate 14, Barker Street, University of New South Wales SYDNEY NSW 2052 AUSTRALIA
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Country
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Australia
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Phone
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+61 2 9385 9882
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Fax
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Email
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[email protected]
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Contact person for public queries
Name
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Elise Roberston
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Address
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Brien Holden Vision Institute
Level 5, North Wing, RMB, Gate 14, Barker Street, University of New South Wales SYDNEY NSW 2052 AUSTRALIA
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Country
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Australia
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Phone
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+61 2 9385 7507
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Fax
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Email
45391
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[email protected]
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Contact person for scientific queries
Name
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Pauline Xu
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Address
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Brien Holden Vision Institute
Level 5, North Wing, RMB, Gate 14, Barker Street, University of New South Wales SYDNEY NSW 2052 AUSTRALIA
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Country
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Australia
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Phone
45392
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+61 2 9385 9882
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Fax
45392
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Email
45392
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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
Source
Title
Year of Publication
DOI
Embase
Vision Performance and Accommodative/Binocular Function in Children Wearing Prototype Extended Depth-of-Focus Contact Lenses.
2019
https://dx.doi.org/10.1097/ICL.0000000000000570
N.B. These documents automatically identified may not have been verified by the study sponsor.
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