Evaluation of Daytime Corneal Swelling During Wear of Galyfilcon A Lenses
Myopia
About this trial
This is an interventional treatment trial for Myopia
Eligibility Criteria
Inclusion Criteria:
- Be of legal age (i.e. 18 years)
- Be of Asian descent and have -Asian eye‖ identifying features (see Appendix A)
- Be mentally competent, willing and able to sign a written informed consent form.
- Have contact lens distance sphere requirement in the range 1.00D to 6.00D.
- Have spectacle astigmatism <1.25D in each eye
- Currently wear soft contact lenses (for at least 3 months prior to the trial ) without experiencing difficulties or contact lens related complications
- Have had an oculo-visual examination within the previous 12 months.
Have normal eyes with no evidence of abnormality or disease. For the purposes of this study a normal eye is defined as one having:
- No evidence of lid abnormality or infection
- No conjunctival abnormality or infection
- No clinically significant slit lamp findings (i.e. edema, staining, scarring, vascularization, infiltrates or abnormal opacities)
- No other active ocular disease
Exclusion Criteria:
- Requires concurrent ocular medication.
- Clinically significant (Grade 3 or 4) corneal staining (FDA scale), corneal stromal haze, corneal vascularization, tarsal abnormalities, bulbar hyperemia, limbal hyperemia, or any other abnormality of the cornea that would contraindicate contact lens wear.
- Has had refractive surgery.
- Has had any anterior ocular surgery. Has had any other ocular surgery or injury within 8 weeks immediately prior to enrolment for this study.
- History of abnormal lachrymal secretions.
- Pre-existing ocular irritation that would preclude contact lens fitting.
- Keratoconus or other corneal irregularity.
- Extended lens wear in last 3 months.
- PMMA, hybrid or RGP lens wear in the previous 8 weeks
- Any systemic illness which would contraindicate lens wear or the medical treatment of which would affect vision or successful lens wear.
- Has diabetes
- Known/reported infectious disease (e.g., hepatitis, tuberculosis) or an immunosuppressive disease (e.g., HIV).
- History of chronic eye disease (e.g. glaucoma or ARMD).
- Pregnancy, lactating, or planning a pregnancy at the time of enrolment.
- Participation in any concurrent clinical trial or in last 30 days.
- Family member or employee of the clinical site, investigator or other study staff.
- Currently wears habitual contact lenses on an EW basis.
Sites / Locations
Arms of the Study
Arm 1
Arm 2
Arm 3
Arm 4
Arm 5
Arm 6
Arm 7
Arm 8
Arm 9
Arm 10
Other
Other
Other
Other
Other
Other
Other
Other
Other
Other
Sequence 1
Sequence 2
Sequence 3
Sequence 4
Sequence 5
Sequence 6
Sequence 7
Sequence 8
Sequence 9
Sequence 10
Five separate sessions of bilateral lens wear of 8 to 12 hours; each session separated by a minimum of 24 hours. This sequence is as follows: Lotrafilcon A Spectacles Galyfilcon A Plus Polymacon Galyfilcon A
Five separate sessions of bilateral lens wear of 8 to 12 hours; each session separated by a minimum of 24 hours. This sequence is as follows: Galyfilcon A Plus Galyfilcon A Lotrafilcon A Polymacon Spectacles
Five separate sessions of bilateral lens wear of 8 to 12 hours; each session separated by a minimum of 24 hours. This sequence is as follows: Galyfilcon A Polymacon Galyfilcon A Plus Spectacles Lotrafilcon A
Five separate sessions of bilateral lens wear of 8 to 12 hours; each session separated by a minimum of 24 hours. This sequence is as follows: Spectacles Lotrafilcon A Polymacon Galyfilcon A Plus Galyfilcon A
Five separate sessions of bilateral lens wear of 8 to 12 hours; each session separated by a minimum of 24 hours. This sequence is as follows: Polymacon Galyfilcon A Spectacles Galyfilcon A Plus Lotrafilcon A
Five separate sessions of bilateral lens wear of 8 to 12 hours; each session separated by a minimum of 24 hours. This sequence is as follows: Galyfilcon A Galyfilcon A Plus Polymacon Lotrafilcon A Spectacles
Five separate sessions of bilateral lens wear of 8 to 12 hours; each session separated by a minimum of 24 hours. This sequence is as follows: Polymacon Spectacles Galyfilcon A Lotrafilcon A Galyfilcon A Plus
Five separate sessions of bilateral lens wear of 8 to 12 hours; each session separated by a minimum of 24 hours. This sequence is as follows: Galyfilcon A Plus Lotrafilcon A Galyfilcon A Spectacles Polymacon
Five separate sessions of bilateral lens wear of 8 to 12 hours; each session separated by a minimum of 24 hours. This sequence is as follows: Lotrafilcon A Galyfilcon A Plus Spectacles Galyfilcon A Polymacon
Five separate sessions of bilateral lens wear of 8 to 12 hours; each session separated by a minimum of 24 hours. This sequence is as follows: Spectacles Polymacon Lotrafilcon A Galyfilcon A Galyfilcon A Plus