One Week Assessment of The Phenacite Lens

Myopia Clinical Trial

Official title:

One Week Assessment of The Phenacite Lens

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT02553395
• Other study ID #: CV-15-40
• Status: Completed
• Phase: N/A
• Start date: September 2015
• Est. completion date: October 2015

Study information

• Verified date: November 2020
• Source: Coopervision, Inc.
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

This study will investigate performance criteria over one week of daily wear to determine if the Study Test contact lens performs equivalently to the comfilcon A contact lenses in terms of subjective ratings and of visual performance. The study test lens was not the final optical design and the study results were not used for the design validation.

Description:

This will be double-masked, randomized, bilateral crossover study comparing the Study Test lens against the comfilcon A control lens, each worn over one week of daily wear. The study test lens was not the final optical design and the study results were not used for the design validation.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 30
• Est. completion date: October 2015
• Est. primary completion date: September 2015
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years to 35 Years

Eligibility

Inclusion Criteria:

• A person is eligible for inclusion in the study if he/she:
• Oculo-visual examination in the last two years
• Between 18 and 35 years of age and has full legal capacity to volunteer
• Has read and understood the informed consent letter
• Is willing and able to follow instructions and maintain the appointment schedule
• Is correctable to a visual acuity of 20/25 or better (in each eye) with their habitual correction or 20/20 best corrected
• Currently wears, or has previously successfully worn, soft contact lenses between -1.00D (Diopter) and -4.50D
• Spherical Contact Lens Rx between -1.00 and -4.00 and spectacle cylinder <-0.75
• Currently spends a minimum of 4 hours a day; 5 days a week on digital devices and can replicate this time during the study period
• Is willing and able to wear the study contact lenses a minimum of 10 hours per day; 5 days a week.

Exclusion Criteria:

• A person will be excluded from the study if he/she:
• Has never worn contact lenses before.
• Has any systemic disease affecting ocular health.
• Is using any systemic or topical medications that will affect ocular health.
• Has any ocular pathology or severe insufficiency of lacrimal secretion (moderate to severe dry eyes) that would affect the wearing of contact lenses.
• Has persistent, clinically significant corneal or conjunctival staining using sodium fluorescein dye.
• Has any clinically significant lid or conjunctival abnormalities, active neovascularization or any central corneal scars.
• Is aphakic.
• Has undergone corneal refractive surgery.
• Is participating in any other type of eye related clinical or research study.

Related Conditions & MeSH terms

• Myopia

Intervention

Device:
• Phenacite (Test) contact lens

• comfilcon A contact lens

Locations

Country	Name	City	State
United States	Clinical Optics Research Lab (CORL) Indiana University School of Optometry, Indiana University	Bloomington	Indiana

Sponsors (1)

Lead Sponsor	Collaborator
Coopervision, Inc.

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Binocular Distance Visual Acuity (VA) - High Illumination High Contrast	Binocular Distance visual acuity High Illumination High Contrast was assessed using logMAR (0.02 logMAR= 1 letter)	Baseline - After 5 minutes of lens settling
Primary	Binocular Distance Visual Acuity (VA) -High Illumination High Contrast	Binocular Distance visual acuity High Illumination High Contrast was assessed using logMAR (0.02 logMAR= 1 letter)	1 week
Primary	Binocular Near Visual Acuity (VA) - High Illumination High Contrast	Binocular Near Visual Acuity High Illumination High Contrast was assessed on logMAR VA (0.02 logMAR= 1 letter)	Baseline - after 5 minutes of lens dispense
Primary	Binocular Near Visual Acuity (VA) - High Illumination High Contrast	Binocular Near Visual Acuity High Illumination High Contrast was assessed on logMAR VA (0.02 logMAR= 1 letter)	1-week
Primary	Binocular Distance Visual Acuity (VA) - Low Illumination High Contrast	Binocular Distance Visual Acuity (VA) - Low Illumination High Contrast was assessed using logMAR VA (0.02 logMAR= 1 letter)	Baseline (After 5 minutes of lens settling)
Primary	Binocular Distance Visual Acuity (VA) - Low Illumination High Contrast	Binocular Distance Visual Acuity (VA) - Low Illumination High Contrast was assessed using logMAR VA (0.02 logMAR= 1 letter)	1 week
Primary	Binocular Near Visual Acuity (VA) - Low Illumination High Contrast	Binocular Near Visual Acuity (VA) - Low Illumination High Contrast was assessed using logMAR VA (0.02 logMAR= 1 letter)	Baseline (after 5 minutes of lens settling)
Primary	Binocular Near Visual Acuity (VA) - Low Illumination High Contrast	Binocular Near Visual Acuity (VA) - Low Illumination High Contrast was assessed using logMAR VA (0.02 logMAR= 1 letter)	1week
Primary	Subjective Ratings for Distance Quality of Vision	Patient subjective scoring using anchors on the scale to provide a score between 0-100 for Distance Quality of Vision: (0=extremely poor vision all of the time. Cannot function; 20= Frequently annoying vision problems; 40=Occasionally annoying vision problems; 60=occasionally noticeable but not annoying vision problems; 80=rarely noticeable vision problems; 100=excellent vision all of the time)	1 week
Primary	Subjective Ratings for Intermediate Quality of Vision	Patient subjective scoring using anchors on the scale to provide a score between 0-100 for Intermediate Quality of Vision: (0=extremely poor vision all of the time. Cannot function; 20= Frequently annoying vision problems; 40=Occasionally annoying vision problems; 60=occasionally noticeable but not annoying vision problems; 80=rarely noticeable vision problems; 100=excellent vision all of the time)	1 week
Primary	Subjective Ratings for Near Quality of Vision	Patient subjective scoring using anchors on the scale to provide a score between 0-100 for Near Quality of Vision: (0=extremely poor vision all of the time. Cannot function; 20= Frequently annoying vision problems; 40=Occasionally annoying vision problems; 60=occasionally noticeable but not annoying vision problems; 80=rarely noticeable vision problems; 100=excellent vision all of the time)	1 week
Secondary	Post Blink Movement -	Post blink movement was assessed by the investigator by the amount of movement (to the nearest 0.1mm) immediately after the blink (0.1mm steps)	Baseline (After 5 minutes of lens dispense)
Secondary	Post Blink Movement	Investigator assessment of Amount of movement (to the nearest 0.1mm) immediately after the blink (0.1mm steps)	1 week
Secondary	Push - Up Test for Lens Tightness	Investigator assessment using Continuous Scale 0-100% (1% steps): 0%=Falls from cornea without lid support, 50%=Optimum, 100%=No movement	Baseline (After 5 minutes of lens dispense)
Secondary	Push - Up Test for Lens Tightness	Investigator assessment using Continuous Scale 0-100% (1% steps): 0%=Falls from cornea without lid support, 50%=Optimum, 100%=No movement	1 week
Secondary	Lens Mobility Rating	Investigator assessment using 5 Categories in 0.50 steps: 0=Immobile - no lag in any versions, 1=Restricted - no lag in some directions but slight lag (0-0.25mm) in others, 2=Secure - slight lag (0.25-0.5mm in each version), 3=Unrestricted - freely lags in a controlled manner on all versions, but not excessive (0.5-1.0mm), 4=Very mobile - excessive lag (>1mm) on versions in all directions in 0.25 steps	Baseline (after 5 minutes of lens dispense)
Secondary	Lens Mobility Rating	Investigator assessment using 5 Categories in 0.50 steps: 0=Immobile - no lag in any versions, 1=Restricted - no lag in some directions but slight lag (0-0.25mm) in others, 2=Secure - slight lag (0.25-0.5mm in each version), 3=Unrestricted - freely lags in a controlled manner on all versions, but not excessive (0.5-1.0mm), 4=Very mobile - excessive lag (>1mm) on versions in all directions in 0.25 steps	1 week
Secondary	Overall Lens Fit Acceptance	Investigator assessment using 5 Categories in 0.25 steps: 0=Can't be worn, 1=Poor - should not be dispensed although no immediate danger, 2=Fair, 3=Good, 4=Optimum in 0.25 steps	Baseline (After 5 minutes of lens dispense)
Secondary	Overall Lens Fit Acceptance	Investigator assessment using 5 Categories in 0.25 steps: 0=Can't be worn,, 1=Poor - should not be dispensed although no immediate danger, 2=Fair, 3=Good, 4=Optimum in 0.25 steps	1 week
Secondary	Subjective Lens Preference - Distance Vision	Patient subjective preference: Phenacite lens, comfilcon A or No Preference	1 week
Secondary	Subjective Lens Preference -Overall Vision Preference	Patient subjective preference: Phenacite test lens, comfilcon A or No Preference	1 week
Secondary	Subjective Lens Preference - Comfort	Patient subjective preference: Phenacite test lens, comfilcon A or No Preference	1 week
Secondary	Subjective Overall Lens Preference	Patient subjective overall preference: Phenacite test lens, comfilcon A or No Preference	1 week