The University of Manchester
Manchester, M13 9PL, United Kingdom
NCT Number: NCT05120128
This is a 5-Visit, single-arm, single-site, subject masked, dispensing trial to evaluate contact lens discomfort and inflammatory biomarker expression.
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Notify Me18 year–60 year
All sexes
Interventional
Not applicable
Manchester, M13 9PL, United Kingdom
The study will assess device feasibility for up to 10 habitual wearers of 4 different types of marketed contact lens.
Healthy volunteers accepted: Yes
Only the study team can determine whether someone qualifies for participation.
Inclusion criteria
Exclusion criteria
TEST Lens
Time frame: at 1-week follow-up
Correlation between change in CLDEQ-8 score and change in MMP-9 biomarker expression
Time frame: at 2-week follow-up
Correlation between change in CLDEQ-8 score and change in MMP-9 biomarker expression
Time frame: at 1-week follow-up
Each subject will have EyeprimTM samples collected which involves the 'double impression' technique where samples are collected twice from the same location using a single EyeprimTM membrane. Samples will be collected from the temporal bulbar conjunctiva in both eyes. From these samples, biomarker expression for MMP-9 will be measured. A higher level of MMP-9 expression is associated with a stronger inflammatory response.
Time frame: at 1-week follow-up
Each subject will have EyeprimTM samples collected which involves the 'double impression' technique where samples are collected twice from the same location using a single EyeprimTM membrane. Samples will be collected from the upper lid margin in both eyes. From these samples, biomarker expression for MMP-9 will be measured. A higher level of MMP-9 expression is associated with a stronger inflammatory response.
Time frame: at 2-week follow-up
Each subject will have EyeprimTM samples collected which involves the 'double impression' technique where samples are collected twice from the same location using a single EyeprimTM membrane. Samples will be collected from the temporal bulbar conjunctiva in both eyes. From these samples, biomarker expression for MMP-9 will be measured. A higher level of MMP-9 expression is associated with a stronger inflammatory response.
Time frame: at 2-week follow-up
Each subject will have EyeprimTM samples collected which involves the 'double impression' technique where samples are collected twice from the same location using a single EyeprimTM membrane. Samples will be collected from the upper lid margin in both eyes. From these samples, biomarker expression for MMP-9 will be measured. A higher level of MMP-9 expression is associated with a stronger inflammatory response.
Time frame: up to 2-week follow-up
CLDEQ-8 is a validated outcome measure for soft contact lens wearers. It has been highly correlated with habitual baseline status and change in overall opinion when subjects are refit with contact lenses.10 The sum of the item scores of CLDEQ-8, ranging from 0 to 37, will be used to assess dry eye symptoms, where higher scores indicated more serious symptoms. The score will be calculated for each group (subject's own lens and AO1D) and timepoint (1- and 2-week follow-up). The difference between subjects' own lens and AO1D will be calculated as (AO1D minus subjects' own lens). The average will be reported for each timepoint.
Time frame: up to 2 week follow up
Each subject will have EyeprimTM samples collected which involves the 'double impression' technique where samples are collected twice from the same location using a single EyeprimTM membrane. Samples will be collected from the temporal bulbar conjuctiva in both eyes. From these samples, biomarker expression for MMP-9 will be measured. A higher level of MMP-9 expression is associated with a stronger inflammatory response. The score will be measured for each group (subject's own lens and AO1D) and timepoint (1- and 2-week follow-up). The difference between subjects' own lens and AO1D will be measured as (AO1D minus subjects' own lens). The average difference will be reported for each timepoint.
Time frame: up to 2 week follow up
Each subject will have EyeprimTM samples collected which involves the 'double impression' technique where samples are collected twice from the same location using a single EyeprimTM membrane. Samples will be collected from the upper lid margin in both eyes. From these samples, biomarker expression for MMP-9 will be measured. A higher level of MMP-9 expression is associated with a stronger inflammatory response. The score will be measured for each group (subject's own lens and AO1D) and timepoint (1- and 2-week follow-up). The difference between subjects' own lens and AO1D will be measured as (AO1D minus subjects' own lens). The average difference will be reported for each timepoint.
Johnson & Johnson Vision Care, Inc.
Industry
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View the official ClinicalTrials.gov record (opens in a new tab)This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.
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