Myopia
Conditions
Brief summary
This study will evaluate changes in visual performance at different pupil sizes between a single vision soft contact lens and multifocal soft contact lens, and compare refractive error measured between these two lenses with an autorefractor and an aberrometer
Interventions
Subjects will wear a single vision soft contact lens only during the study visit
DEVICEMultifocal contact lens
Subjects will wear a multifocal soft contact lens only during the study visit
Sponsors
David A Berntsen, OD PhD
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
OTHER
Masking
SINGLE (Subject)
Eligibility
Sex/Gender
ALL
Age
18 Years to 39 Years
Healthy volunteers
No
Inclusion criteria
* Able to read and understand the informed consent document * 18 to 39 years of age (inclusive) * Best corrected visual acuity of 20/25 or better in the right eye * Refractive error from -1.00D to -8.00D with astigmatism less than or equal to -1.00D in the right eye (corneal plane)
Exclusion criteria
* Any ocular or systemic conditions affecting vision, refraction, or the ability to wear a soft contact lens * History of ocular trauma or surgery causing abnormal or distorted vision * Current Rigid Gas Permeable (RGP) contact lens wearers * Pregnant and/or lactating females, by self-report
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Visual performance | Through completion of study visit, an average of 3 hours | Low contrast visual performance will be measured at different pupil sizes for each subject while wearing each of the two lenses |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Refractive error | Through completion of study visit, an average of 3 hours | Refractive error will be measured with an autorefractor and an aberrometer with subjects wearing each of the two lenses |
Countries
United States
Outcome results
None listed