None listed
Conditions
Brief summary
The purpose of this study is to assess the effect of adding channels to scleral contact lenses upon corneal tissue swelling and tear flow behind the contact lens in young healthy adults during short-term lens wear (6 hours). The null hypothesis is that the incorporation of scleral lens channels will have no significant effect upon the primary outcome measures.
Interventions
The intervention is a scleral contact lens with landing zone modifications (channels). All lenses will be fitted to each individual eye and assessed by contact lens practitioners with over 10 years of experience. Scleral lenses will be worn in one eye for one 6 hour session in a research laboratory/clinical facility. The order of lens wear (intervention/control) will be randomized. The intervention and control lenses will be worn on different days with at least one day without contact lens wear separating the two measurement sessions.
Sponsors
Study design
Eligibility
Inclusion criteria
- Age 18- under 40 years - At least 0.00 logMAR visual acuity in each eye - No significant ocular disease - No significant eye movement anomalies
Exclusion criteria
- Any systemic disease, allergies, immunosuppressive diseases, autoimmune diseases, COVID-19 - Use of systemic medications known to have a side effect in the eyes or vision - Current use of any ocular medication - Ocular disease