A Contralateral Dispensing Clinical Trial of Study Test Silicone Hydrogel Lens Against Enfilcon A Silicone Hydrogel Lens

NCT ID: NCT02537717

Last Updated: 2020-11-19

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 17 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2015-10-01
• Study Completion Date: 2016-04-29

Brief Summary

This will be a 1-month dispensing, double-masked, randomized, contralateral study comparing the test lens against the control lens. The assignment of lenses to eyes (i.e. which lens type is to be worn in which eye throughout the study) will be selected according to a randomization table.

Detailed Description

Both test and control lenses will be used in a daily wear modality for 1 month. It is anticipated that this study will involve the following visits: Baseline (screening and dispense visit combined), 2-week visit and 4-week visit.

Conditions

Myopia

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: DOUBLE

Study Groups

Sapphire lens

Each subject will be randomized to wear the test lens in one eye and control lens in the other eye. Both test and control lenses will be used in a daily wear modality for one month.

Group Type: EXPERIMENTAL

Sapphire Lens

Intervention Type: DEVICE

Each subject randomized to wear either the test or control in either the left of right eye.

enfilcon A

Each subject will be randomized to wear the test lens in one eye and control lens in the other eye. Both test and control lenses will be used in a daily wear modality for one month.

Group Type: ACTIVE_COMPARATOR

enfilcon A

Intervention Type: DEVICE

Each subject randomized to wear either the test or control in either the left of right eye.

Interventions

Sapphire Lens

Each subject randomized to wear either the test or control in either the left of right eye.

Intervention Type: DEVICE

enfilcon A

Each subject randomized to wear either the test or control in either the left of right eye.

Intervention Type: DEVICE

Eligibility Criteria

Inclusion Criteria

• Is at least 17 years of age and has full legal capacity to volunteer
• Has read and understood the information consent letter
• Is willing and able to follow instructions and maintain the appointment schedule
• Is correctable to a visual acuity of 20/30 or better (in each eye) with their habitual correction or the assigned study lenses
• Is an adapted soft contact lens wearer (For the purpose of this study: Current lens wear at least 3 days per week, 8 hours each day.)

Exclusion Criteria

• Is participating in any concurrent clinical or research study
• Has any known active* ocular disease and/or infection;
• Has a systemic condition that in the opinion of the investigator may affect a study outcome variable
• Is using any systemic or topical medications that in the opinion of the investigator may affect a study outcome variable^
• Has known sensitivity to the diagnostic pharmaceuticals to be used in the study
• Is pregnant, lactating or planning a pregnancy at the time of enrolment (by verbal confirmation at the screening visit). Rationale is that systemic changes over time due to pregnancy/lactating may adversely affect contact lens wear e.g. ocular dryness may increase.
• Is aphakic
• Has undergone corneal refractive surgery.

For the purposes of this study, active ocular disease is defined as infection or inflammation which requires therapeutic treatment. Mild (i.e. not considered clinically relevant) lid abnormalities (blepharitis, meibomian gland dysfunction, papillae), corneal and conjunctival staining and dry eye are not considered active ocular disease. Neovascularization and corneal scars are the result of previous hypoxia, infection or inflammation and are therefore not active.

Participants will be excluded with significant slit lamp findings (e.g. infiltrates or other slit lamp findings Grade 3 or above: corneal edema, tarsal abnormalities, and conjunctival injection) or active ocular disease (e.g. glaucoma, history of recurrent corneal erosions, and intraocular infection or inflammation of an allergic, bacterial, or viral etiology).

^ For the purposes of this study, participants will be excluded, if currently taking medication, such as oral antihistamines, antihistamine eye drops, oral and ophthalmic beta-adrenergic blockers (e.g. Propanolol, Timolol), anticholinergics, oral steroids and any prescribed or over-the-counter eye medication, except artificial tears or eye lubricants

• Minimum Eligible Age: 17 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

CooperVision, Inc.

INDUSTRY

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Lyndon Jones

Role: PRINCIPAL_INVESTIGATOR

University of Waterloo

Locations

Center for Contact Lens Research, University of Waterloo

Waterloo, Ontario, Canada

Countries

Canada

Other Identifiers

CV-15-55

Identifier Type: -

Identifier Source: org_study_id