Study Stopped
unexpected adverse events
Evaluation of DW Silicone Hydrogel Lens Compared to DW Silicone Hydrogel Lens
1 other identifier
interventional
28
2 countries
2
Brief Summary
The purpose of this study is to evaluate the performance of the investigational CooperVision silicone hydrogel lens compared to a currently-marketed silicone hydrogel contact lens up to 30 days of daily lens wear.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at below P25 for not_applicable
Started May 2011
Shorter than P25 for not_applicable
2 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
Study Start
First participant enrolled
May 1, 2011
CompletedFirst Submitted
Initial submission to the registry
May 22, 2011
CompletedPrimary Completion
Last participant's last visit for primary outcome
June 1, 2011
CompletedStudy Completion
Last participant's last visit for all outcomes
June 1, 2011
CompletedFirst Posted
Study publicly available on registry
June 30, 2011
CompletedResults Posted
Study results publicly available
March 21, 2014
CompletedSeptember 4, 2019
August 1, 2019
1 month
May 22, 2011
November 1, 2013
August 26, 2019
Conditions
Outcome Measures
Primary Outcomes (2)
Subjective Comfort Preference - Participants Preference Response
Subjective responses of participants administered by questionnaire and measured on a linear scale (0-100) measured at each visit.
V1 (Initial), V2 (Day-7), V3 (Day-14), V4 (Day-30)
Ocular Health
Ocular health determined by biomicroscopy recorded on a severity scale (0-4) for change from baseline over 30 days.
Change from baseline over 30 days measured at V1 (Initial), V2 (Day-7), V3 (Day-14), V4 (Day-30)
Secondary Outcomes (2)
Investigator Surface Preference
V1 (Initial), V2 (Day-7), V3 (Day-14), V4 (Day-30)
Investigator Fit Preference
V1 (Initial), V2 (Day-7), V3 (Day-14), V4 (Day-30)
Study Arms (1)
enfilcon A + senofilcon A
OTHERSimultaneous wearing of daily wear contact lenses - investigational enfilcon A contact lenses in one eye and comparator senofilcon A worn in the other
Interventions
senofilcon A spherical contact lens worn in a daily wear modality
investigational enfilcon A, worn daily wear modality
Eligibility Criteria
You may qualify if:
- Be at least 18 years of age as of the date of evaluation for the study.
- Not using any ocular medications
- Have a self-reported full eye examination within 2 years.
- Have:
- read the Informed Consent
- be given an explanation of the Informed Consent
- indicate understanding of the Informed Consent
- signed the Informed Consent document.
- Be willing and able to adhere to the instructions set forth in this protocol and able to keep all specified appointments.
- Be an adapted, current full-time silicone hydrogel or soft contact lens wearer. An adapted full-time wearer is defined as wearing contact lenses on a daily basis for at least 8 hours per day for at least one month prior to participation in the study.
- Possess wearable and visually functional eyeglasses.
- Be in good general health, based on his/her knowledge.
- Require spectacle lens powers between -1.00 and -6.00 diopters sphere with no more than 0.75 diopter of refractive astigmatism in order to have the best spherical equivalent power of -6.50 or less.
- Be willing to wear contact lenses in both eyes.
- Have manifest refraction Snellen visual acuities (VA) equal to or better than 20/25 (less than or equal to LogMAR 0.10) in each eye.
- +1 more criteria
You may not qualify if:
- Wearing lenses in a monovision modality and is unwilling to be fit with distance lenses in both eyes. NOTE: Subjects may not wear lenses in a monovision modality at any time during the study as it will interfere with the visual acuity analysis.
- Any active participation in another one-day clinical trial within 7 days prior to this study or another dispensing trial within 30 days prior to this study.
- Currently pregnant (to the best of the subject's knowledge), is lactating or is planning a pregnancy within the next month.
- Has a known sensitivity to ingredients used in the over the counter contact lens care approved for use in the study.
- Previous refractive surgery/anterior segment surgery; or current or previous orthokeratology treatment or irregular cornea.
- Is aphakic or pseudophakic.
- Unable to achieve a satisfactory fit with the lens designs used in the study
- Ocular or systemic disease such as, but not limited to: anterior uveitis or iritis (past or present), glaucoma, Sjögren's syndrome, lupus erythematosus, sclerodermia, keratoconus or type II diabetes.
- The need for topical ocular medications or any medication which might contradict contact lens wear or which would require the lenses to be removed during the day.
- The presence of clinically anterior segment infection, inflammations or abnormalities; such as iritis; or any infection of the eye, lids, or associated structures.
- A history of herpetic keratitis.
- A known history of corneal hypoesthesia (reduced corneal sensitivity) or active corneal ulcer, corneal infiltrates or fungal infection.
- A history of papillary conjunctivitis that has interfered with contact lens wear.
- Slit lamp findings that would contraindicate contact lens wear, including but not limited to:
- Pathological dry eye or associated dry eye symptoms with decreased tear levels and punctuate staining \> grade 2
- +6 more criteria
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (2)
Clinical Research Center, University of California, Berkeley
Berkeley, California, 94704, United States
University of Manchester
Manchester, M13 9PL, United Kingdom
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Limitations and Caveats
Incomplete data sets / Data not analyzed / Not all subjects completed the study measures at each outcome measurement time frame before the study was terminated. 20 participants completed V1 and only 1 participant completed the V2 follow-up.
Results Point of Contact
- Title
- Meng Lin, OD, PhD
- Organization
- Clinical Research Center (CRC) UC Berkeley School of Optometry
Publication Agreements
- PI is Sponsor Employee
- No
- Restriction Type
- OTHER
- Restrictive Agreement
- Yes
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- NA
- Masking
- DOUBLE
- Who Masked
- PARTICIPANT, INVESTIGATOR
- Purpose
- TREATMENT
- Intervention Model
- SINGLE GROUP
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
May 22, 2011
First Posted
June 30, 2011
Study Start
May 1, 2011
Primary Completion
June 1, 2011
Study Completion
June 1, 2011
Last Updated
September 4, 2019
Results First Posted
March 21, 2014
Record last verified: 2019-08