Randomized, Double-arm, Controlled Clinical Trial to Evaluate the Symptoms in Symptomatic Contact Lens Wearers Following Application of Intranasal Tear Neurostimulator Versus Control (CORIANDER)
Overview
- Phase
- Not Applicable
- Intervention
- Not specified
- Conditions
- Dry Eye Syndromes
- Sponsor
- Allergan
- Enrollment
- 84
- Locations
- 1
- Primary Endpoint
- Comfortable Wear Time (CWT) in the Study Eye
- Status
- Completed
- Last Updated
- 6 years ago
Overview
Brief Summary
This study will evaluate the increase in comfort and comfortable contact lens (CL) wear time associated with application of TrueTear (active intranasal neurostimulation) compared with application of TrueTear sham control (intranasal application which is not electrically active) in symptomatic CL wearers.
Investigators
Eligibility Criteria
Inclusion Criteria
- •A person is eligible for inclusion if he/she
- •In at least one eye, has a cotton swab nasal stimulation Schirmer test score at least 4 mm greater than 3 minute Schirmer with anesthesia basal score in the same eye at the Screening Visit
- •Is an adapted soft contact lens wearer and currently wears lenses an average of at least 2 days per week, with an average minimum wearing time of 3 hours each day over the past month and is able and willing to wear lenses for at least 6 hours on four study day visits
- •Has at least 20/40 visual acuity in both eyes with CL correction
- •Is symptomatic according to Young's categorization
Exclusion Criteria
- •Refractive error surgery
- •Chronic or recurrent epistaxis, coagulation disorders or other conditions that may increase the risk of bleeding
- •History of nasal or sinus surgery
- •Vascularized polyp, deviated septum or severe nasal airway obstruction at the Screening visit
- •Cardiac demand pacemaker, implanted defibrillator, or other active implanted metallic or active implanted electronic device in the head
Outcomes
Primary Outcomes
Comfortable Wear Time (CWT) in the Study Eye
Time Frame: Day 24
CWT was calculated by taking the difference between the time participants reported started to find their CLs getting uncomfortable and the reported insertion time for that day. The study eye was defined as the qualified eye with the greatest increase in tear production with stimulation by a cotton swab at the Screening Visit. If both eyes qualified, then the right eye was designated as the study eye.
Comfort Rating Score in the Study Eye
Time Frame: CL Insertion, After 2 hours and the End of Day on Day 24
The participant assessed contact lens comfort in the study eye using a 100 point scale where a score of 0=Extremely uncomfortable and a score of 100=Extremely comfortable. The study eye was defined as the qualified eye with the greatest increase in tear production with stimulation by a cotton swab at the Screening Visit. If both eyes qualified, then the right eye was designated as the study eye.
Contact Lens Dry Eye Questionnaire (CLDEQ-8) Score in the Study Eye
Time Frame: Day 28
The CLDEQ-8 is a validated questionnaire used to quantify symptoms experienced by the contact lenses (CLs) wearer. The participants were asked to respond to 8 questions about how their CLs performed over the preceding 2-week period. 4 questions (Eye discomfort, Eye dryness, Changeable blurry vision and Closing your eyes) answered on a scale of 0=Never to 4=Constantly; 3 questions about the end of wearing time (Discomfort, Dryness, Changeable blurry vision) answered on a scale of 0=Never have it to 5=Very Intense and 1 question (Removing your lenses) on a scale of 1=Never to 6=Several times a day for a total possible score of 1(best) to 37 (worst). The study eye was defined as the qualified eye with the greatest increase in tear production with stimulation by a cotton swab at the Screening Visit. If both eyes qualified, then the right eye was designated as the study eye.
Total Wear Time (Total WT) in the Study Eye
Time Frame: Day 24
Total WT was calculated by taking the difference between the time participants reported removing their CLs and the reported insertion time for that day. The study eye was defined as the qualified eye with the greatest increase in tear production with stimulation by a cotton swab at the Screening Visit. If both eyes qualified, then the right eye was designated as the study eye.