Design Validation of Toric Contact Lenses in Senofilcon A With a Blue-Blocking Chromophore
Trial Snapshot
- Phase
- Not Applicable
- Status
- Completed
- Enrollment
- 188
- Locations
- 10
- Primary Endpoint
- Proportion of Eyes With Acceptable Lens Fitting
Study Overview
Brief Summary
This will be a 4-visit, randomized, controlled, single-masked, bilateral wear, dispensing, 2-treatment, 2-sequence, 2-period crossover study.
Study Design
- Study Type
- Interventional
- Allocation
- Randomized
- Intervention Model
- Crossover
- Primary Purpose
- Treatment
- Masking
- Single (Participant)
Eligibility Criteria
- Ages
- 18 Years to 39 Years (Adult)
- Sex
- All
- Accepts Healthy Volunteers
- Yes
Inclusion Criteria
- •Potential subjects must satisfy all of the following criteria to be enrolled in the study:
- •The subject must:
- •Read, understand, and sign the STATEMENT OF INFORMED CONSENT and receive a fully executed copy of the form.
- •Appear able and willing to adhere to the instructions set forth in this clinical protocol.
- •Be between 18 and 39 years of age (inclusive) at the time of screening.
- •Habitually wear soft contact lenses in both eyes in a daily or daily disposable wear modality (i.e., not extended wear modality). Habitual wearer is defined as a minimum of 6 hours per day, for a minimum of 2 days per week during the past four weeks.
- •Possess a wearable pair of spectacles that provide correction for distance vision.
- •In both eyes, have refractive error suitable for correction with the toric contact lens powers available in this study:
- •Sphere powers (DS) -1.50 through -4.00 in 0.25 steps
- •Cylinder powers (DC) -0.75 and -1.25
- •Axes (°) 170, 180, 10, 80, 90, 100
- •Have best corrected monocular distance visual acuity of 20/30 or better in each eye.
Exclusion Criteria
- •Potential subjects who meet any of the following criteria will be excluded from participating in the study:
- •The subject must not:
- •Be currently pregnant or lactating.
- •Be diabetic.
- •Be currently using any ocular medications or have an ocular infection of any type.
- •By self-report, have any ocular or systemic disease, allergies, infection, or use of medication that might contraindicate or interfere with contact lens wear, or otherwise compromise study endpoints, including infectious disease (e.g., hepatitis, tuberculosis), contagious immunosuppressive disease (e.g., Human Immunodeficiency Virus [HIV]), autoimmune disease (e.g. rheumatoid arthritis, Sjögren's syndrome), or history of serious mental illness or seizures. See section 9.1 for additional details regarding excluded systemic medications.
- •Have habitually worn rigid gas permeable (RGP) lenses, orthokeratology lenses, or hybrid lenses (e.g. SynergEyes, SoftPerm) within the past 6 months.
- •Be currently wearing monovision or multifocal contact lenses.
- •Be currently wearing lenses in an extended wear modality.
- •Have a history of strabismus or amblyopia.
- •Be an employee (e.g., Investigator, Coordinator, Technician) or immediate family member of an employee (including partner, child, parent, grandparent, grandchild or sibling of the employee or their spouse) of the clinical site.
- •Have participated in a contact lens or lens care product clinical trial within 7 days prior to study enrollment.
- •Have clinically significant (grade 3 or higher on the FDA grading scale) slit lamp findings (e.g., corneal edema, neovascularization or staining, tarsal abnormalities or bulbar injection) or other corneal or ocular disease or abnormalities that contraindicate contact lens wear or may otherwise compromise study endpoints (including entropion, ectropion, chalazia, recurrent styes, glaucoma, history of recurrent corneal erosions, aphakia, moderate or above corneal distortion, herpetic keratitis).
- •Have fluctuations in vision due to clinically significant dry eye or other ocular conditions.
- •Have had or have planned (within the study period) any ocular or intraocular surgery (e.g., radial keratotomy, PRK, LASIK, iridotomy, retinal laser photocoagulation, etc.).
Arms & Interventions
Test/Control
Eligible subjects who are habitual soft contact lens wearers will be randomized into the Test/Control sequence, to wear bilaterally two different study lenses, one at a time, for a minimum of 8 hours per day for at least 5 days during each wear period, over two wear periods (test then control) with a washout period of 7+/-2 days duration between wear periods.
Intervention: Acuvue Oasys 1 Day for Astigmatism (Device)
Test/Control
Eligible subjects who are habitual soft contact lens wearers will be randomized into the Test/Control sequence, to wear bilaterally two different study lenses, one at a time, for a minimum of 8 hours per day for at least 5 days during each wear period, over two wear periods (test then control) with a washout period of 7+/-2 days duration between wear periods.
Intervention: TRA100/TRA200 series toric contact lens with HEVL-blocking chromophore (Device)
Control/Test
Eligible subjects who are habitual soft contact lens wearers will be randomized into the Control/Test sequence, to wear bilaterally two different study lenses, one at a time, for a minimum of 8 hours per day for at least 5 days during each wear period, over two wear periods (control then test) with a washout period of 7+/-2 days duration between wear periods.
Intervention: Acuvue Oasys 1 Day for Astigmatism (Device)
Control/Test
Eligible subjects who are habitual soft contact lens wearers will be randomized into the Control/Test sequence, to wear bilaterally two different study lenses, one at a time, for a minimum of 8 hours per day for at least 5 days during each wear period, over two wear periods (control then test) with a washout period of 7+/-2 days duration between wear periods.
Intervention: TRA100/TRA200 series toric contact lens with HEVL-blocking chromophore (Device)
Outcomes
Primary Outcomes
Proportion of Eyes With Acceptable Lens Fitting
Time Frame: Up to 1-Week Follow-up
Contact lens fitting acceptance was assessed for each subject eye using a biomicroscope post lens insertion at the 1-week follow-up. Lens fit was a binary variable where acceptable lens fit=1 and unacceptable lens fit=0. The proportion of eyes with acceptable lens fit was reported for each lens.
Distance Monocular logMAR Visual Acuity
Time Frame: 1-Week Follow-up
Distance Monocular visual acuity was measured on a logMAR (Logarithm of Minimal Angle of Resolution) scale under high luminance high contrast condition. Visual acuity is assessed using ETDRS (Early Treatment Diabetic Retinopathy Study) charts. Letter-by-letter results calculated the visual performance score for each chart read. LogMAR scores closer to zero, or below zero, indicate a better visual acuity. A logMAR visual performance score of 0.0 is equivalent to Snellen visual acuity of 20/20.
CLUE Vision Score
Time Frame: 1-Week Follow-up
Subjective vision was assessed using the Contact Lens User Experience™ (CLUE) questionnaire. CLUE is a validated patient-reported outcomes (PRO) questionnaire to assess patient-experience attributes of soft contact lenses (comfort, vision, handling, and packaging) in a contact-lens wearing population in the US, ages 18-65. Derived CLUE scores using Item Response Theory (IRT) follow a normal distribution with a population average score of 60 (SD 20), where higher scores indicate a more favorable/positive response with a range of 0-120.
Proportion of Eyes With Absolute Rotation Less Than or Equal to 10 Degrees
Time Frame: 15-minutes after lens insertion
Absolute rotation was assessed for each subject eye using a slit lamp 15-minutes after lens insertion. Acceptable absolute rotation was dichotomized into a binary response where Y=1 if absolute rotation was less than or equal to 10 degrees and Y=0 otherwise (absolute rotation greater than 10 degrees). The proportion of eyes with absolute rotation less than or equal to 10 degrees was report for each lens.
Proportion of Eyes With Grade 3 or Higher Slit Lamp Findings
Time Frame: Up to 1-Week Follow-up
Slit Lamp Findings (SLF) were assessed using a biomicroscope and was graded using the FDA grading scale (Grade: 0, 1,2, 3 and 4) with grade 0 represents the absence of findings and 1 to 4 representing successively worse findings (i.e. Grade 1 = trace, Grade 2 = Mild, Grade 3 = moderate and Grade 4 = severe). This was performed on each subject eye at every study visit (baseline, unscheduled visits and 1-week follow-up). The data was then dichotomized into two groups. Those with grade 3 or higher and those with grade 2 or lower. The proportion of eyes with SLF with grade 3 or higher was reported for each lens.
Proportion of Eyes With Rotational Stability Less Than or Equal to 5 Degrees
Time Frame: 15-minutes after lens insertion
Rotational Stability was assessed for each subject eye using a slit lamp 15-minutes after lens insertion. Rotational Stability was dichotomized into a binary response where Y=1 if Rotational Stability was less than or equal to 5 degrees and Y=0 otherwise (Rotational Stability greater than 5 degrees). The proportion of eyes with Rotational Stability less than or equal to 5 degrees was report for each lens.
Secondary Outcomes
- CLUE Comfort Score(1-Week Follow-up)
- CLUE Handling Score(1-Week Follow-up)