Refractive Errors
Conditions
Brief summary
The purpose of this study is to examine the long term effect of ultra-violet filtering contact lenses on macular pigment density (MPOD) and accommodative function.
Interventions
DEVICENo Intervention
No Intervention
Sponsors
Johnson & Johnson Vision Care, Inc.
Study design
Observational model
CASE_CONTROL
Time perspective
RETROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to 43 Years
Healthy volunteers
No
Inclusion criteria
* The subject is an adapted soft contact lens wearer of at least 5 years duration of either an UV filtering contact lens or a non-UV filtering contact lens * The subject must report wearing their contact lenses, on average, for a minimum of 5 days each week. * The subject must have best corrected visual acuity of 6/7.5 or better in each eye. * The subject must appear able and willing to adhere to the instructions set forth in this clinical protocol. * The subject must read and sign the statement of informed consent * The subject must be between 18 and 43 years of age
Exclusion criteria
* On medication known to affect accommodation * Active ocular surface pathology * Had eye surgery * Significant ocular tissue anomaly * Any medical condition that may be prejudicial to the study * Diabetes
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Macular Pigment Optical Density (MPOD) after 5 years of contact lens wear | Approximately 40 minutes | The MPOD will be assessed at a single visit will be compared between wearers of contact lenses with UV protection and those wearers of lenses without UV protection, based on their 5 year wear history. |
| Amplitude of Accommodation after 5 years of contact lens wear | Approximately 40 minutes | Measured with autorefractor at a single visit and will be compared between wearers of contact lenses with UV protection and those wearers of lenses without UV protection, based on their 5 year wear history. |
Countries
United Kingdom
Outcome results
None listed