Myopia
Conditions
Keywords
Contact lenses, myopia, lens geometry
Brief summary
The purpose of this study is to evaluate changes in contact lens geometry after lens wear
Detailed description
The purpose of this study is to evaluate changes invitro and ex vivo in contact lens geometry in daily lens wear
Interventions
DEVICEAir Optix Aqua
Contact lens material: Lotrafilcon A
DEVICEBiofinity
Contact lens material: Comfilcon A
DEVICEProclear
Contact lens material: Omafilcon A
DEVICEAcuvue Oasys
Contact lens material: Senofilcon A
DEVICEAcuvue 2
Contact lens material: Etafilcon A
DEVICEPurevision
Contact lens material: Balafilcon A
Sponsors
Alcon Research
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
* • Able to read and comprehend English and give informed consent as demonstrated by signing a record of informed consent; * Be at least 18 years old; * Willing to comply with the wearing and clinical trial visit schedule as directed by the investigator; * Have ocular health findings considered to be normal and which would not prevent the participant from safely wearing contact lenses; * Has vision correctable to at least 6/12 (20/40) or better at distance in each eye with contact lenses; * Be experienced at wearing contact lenses.
Exclusion criteria
* • Any pre-existing ocular irritation, injury or condition (including keratoconus and herpes keratitis) of the cornea, conjunctiva or eyelids that would preclude contact lens fitting and safe wearing of contact lenses; * Any systemic disease that adversely affects ocular health * An active corneal infection or any active ocular disease that would affect wearing of contact lenses; * Use of any topical ocular medication during trial with the exception of saline drops ; * Use of or a need for any systemic medication or topical medications which may alter normal ocular findings/are known to affect a participant's ocular health/physiology or contact lens performance * Eye surgery within 12 weeks immediately prior to enrolment for this trial; * Previous corneal refractive surgery; * Contraindications to contact lens wear; * Participated or currently enrolled in another clinical trial that may have affected vision or ocular physiology within the previous 2 weeks; * Be pregnant (formal testing of pregnancy is not required. A participant's verbal report is sufficient); * Worn soft contact lenses 2 calendar days or rigid gas permeable/ orthokeratology lenses 7 calendar days prior.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Lens Geometry | 1 week |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Corneal Shape | 1 week | — |
| Conjunctival Staining | 1 week | The conjunctival staining |
Countries
Australia
Outcome results
None listed