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Trial details imported from ClinicalTrials.gov
For full trial details, please see the original record at
https://clinicaltrials.gov/study/NCT02484586
Registration number
NCT02484586
Ethics application status
Date submitted
24/06/2015
Date registered
29/06/2015
Date last updated
11/09/2017
Titles & IDs
Public title
Dispensing Study to Assess the Visual Performance of Optimised Prototype Contact Lenses
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Scientific title
Dispensing Study to Assess the Visual Performance of Optimised Prototype Contact Lenses
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Secondary ID [1]
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CRTC2014-04
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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:
Presbyopia
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Refractive Error
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Condition category
Condition code
Eye
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Diseases / disorders of the eye
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Treatment: Devices - Etafilcon A
Treatment: Devices - Etafilcon A
Treatment: Devices - Nelfilcon A
Treatment: Devices - Nesofilcon A
Treatment: Devices - Nelfilcon A
Treatment: Devices - Etafilcon A
Treatment: Devices - Somofilcon A
Treatment: Devices - 58% Poly-HEMA
Treatment: Devices - Omafilcon A
Other: Presbyope group - 40 years and over with a reading add.
Control lens: Etafilcon A, Nelfilcon A, Nesofilcon A, Somofilcon A, 58% Poly-HEMA
Test lens: Etafilcon A
Up to 10 prototype contact lens designs and at least 1 commercially available contact lens designs will be worn by each participant for up to a week on a daily disposable modality. Participants will attend separate fitting and assessment visits for each lens type (Fitting Visit on Day 1, and Assessment Visit as late as Day 7, but may be as early as 6 hours after the Fitting Visit). There will be a minimum 1 night washout period between lens designs, i.e. after an assessment visit but before the next fitting visit.
Other: Non-Presbyope group - 18-39 years with no reading add.
Control lens: Etafilcon A, Nelfilcon A, Omafilcon A
Test lens: Etafilcon A
Up to 10 prototype contact lens designs and at least 1 commercially available contact lens designs will be worn by participants for up to a week on a daily disposable modality. Participants will attend separate fitting and assessment visits for each lens type (Fitting Visit on Day 1, and Assessment Visit as late as Day 7, but may be as early as 6 hours after the Fitting Visit). There will be a minimum 1 night washout period between lens designs, i.e. after an assessment visit but before the next fitting visit.
Treatment: Devices: Etafilcon A
Prototype lens material
Treatment: Devices: Etafilcon A
Control lens for presbyope group
Treatment: Devices: Nelfilcon A
Control lens for presbyope group
Treatment: Devices: Nesofilcon A
Control lens for presbyope group
Treatment: Devices: Nelfilcon A
Control lens for non-presbyope group
Treatment: Devices: Etafilcon A
Control lens for non-presbyope group
Treatment: Devices: Somofilcon A
Control lens for presbyope group
Treatment: Devices: 58% Poly-HEMA
Control lens for presbyope group
Treatment: Devices: Omafilcon A
Control lens for non-presbyope group
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Intervention code [1]
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Treatment: Devices
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Comparator / control treatment
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Control group
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Outcomes
Primary outcome [1]
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Visual acuity on a LogMAR (logarithm of the minimum angle of resolution) scale
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Assessment method [1]
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For each lens, visual acuity will be measured at distance with a computerised LogMAR chart and at near with a near LogMAR chart. Data will be summarised as means +/- standard deviations. No transformation is likely to be required. Visual acuity will be compared between each lens design and control lens types. The significance of lens design will be determined for each visit.
Repeated effects linear mixed model with subject random intercepts or paired t tests will be employed for the analysis of visual acuity. Analysis will be performed within each study arm namely presbyopes and non-presbyopes.
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Timepoint [1]
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Approximately 1 week after lens fitting
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Secondary outcome [1]
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Subjective rating of vision on a 1-10 visual analogue scale
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Assessment method [1]
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For each lens, subjective ratings of vision will be assessed with a questionnaire based on a 1 to 10 scale in steps of 1. The questionnaire has been designed specifically for this study. Data will be summarised as means +/- standard deviations. No transformation is likely to be required. Subjective ratings will be compared between each lens design and control lens types. The significance of lens design will be determined for each visit. Repeated effects linear mixed model with subject random intercepts or paired t tests will be employed for the analysis of subjective ratings. Analysis will be performed within each study arm namely presbyopes and non-presbyopes.
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Timepoint [1]
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Approximately 1 week after lens fitting
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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.
* Be at least 18 years old, 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.
* Is correctable to at least 6/12 (20/40) or better in each eye with contact lenses.
* Be suitable and willing to wear contact lenses.
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Minimum age
18
Years
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Maximum age
70
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. Ocular medication can be prescribed during the course of the trial as per standard optometric practice.
* 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. Note: 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 surgery.
* 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
Randomised controlled 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
The people analysing the results/data
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Intervention assignment
Crossover
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Other design features
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Phase
NA
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Type of endpoint/s
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Statistical methods / analysis
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Recruitment
Recruitment status
Completed
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Data analysis
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Reason for early stopping/withdrawal
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Other reasons
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Date of first participant enrolment
Anticipated
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Actual
1/10/2015
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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
7/02/2017
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Sample size
Target
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Accrual to date
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Final
161
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Recruitment in Australia
Recruitment state(s)
NSW
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Recruitment hospital [1]
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Brien Holden Vision Institute - Sydney
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Recruitment postcode(s) [1]
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2052 - Sydney
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Funding & Sponsors
Primary sponsor type
Commercial sector/industry
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Name
Brien Holden Vision
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Address
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Country
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Ethics approval
Ethics application status
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Summary
Brief summary
The aim of this study is to assess the visual performance of multiple optimised prototype soft contact lens designs compared to commercially available contact lenses.
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Trial website
https://clinicaltrials.gov/study/NCT02484586
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Trial related presentations / publications
Jong M, Tilia D, Sha J, Diec J, Thomas V, Bakaraju RC. The Relationship between Visual Acuity, Subjective Vision, and Willingness to Purchase Simultaneous-image Contact Lenses. Optom Vis Sci. 2019 Apr;96(4):283-290. doi: 10.1097/OPX.0000000000001359. Sha J, Tilia D, Kho D, Amrizal H, Diec J, Yeotikar N, Jong M, Thomas V, Bakaraju RC. Visual Performance of Daily-disposable Multifocal Soft Contact Lenses: A Randomized, Double-blind Clinical Trial. Optom Vis Sci. 2018 Dec;95(12):1096-1104. doi: 10.1097/OPX.0000000000001311.
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Public notes
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Contacts
Principal investigator
Name
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Jennifer Sha, BOptom/BSc
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Address
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Brien Holden Vision Institute
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Country
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Phone
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Fax
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Email
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Contact person for public queries
Name
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Address
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Country
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Phone
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Fax
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Email
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Contact person for scientific queries
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
No documents have been uploaded by study researchers.
Results not provided in
https://clinicaltrials.gov/study/NCT02484586
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