The Impact of Contact Lens Coefficient of Friction (CoF) on the Development of Lid Wiper Epitheliopathy (LWE)

The Impact of Contact Lens Coefficient of Friction (CoF) on the Development of Lid Wiper Epitheliopathy (LWE)

This study examines the development of Lid Wiper Epitheliopathy (LWE) in individuals fit with contact lenses having difference coefficients of friction (CoF)

The primary study objectives are to determine the amount of Lid Wiper Epitheliopathy (LWE) induced in subjects after contact lens fitting that do not have LWE at study enrollment. Subjects in the trial will be fit in 2 contact lenses with different coefficients of friction (CoF). One eye will be fit in a contact lens with a low coefficient of friction (Acuvue Oasys®, Johnson & Johnson Vision, Jacksonville FL) while the contralateral eye will be fit in a contact lens with a high CoF (Air Optix® Night & Day® Aqua, Ft. Worth, TX), as reported in the scientific literature. The eye receiving each lens will be assigned randomly. The presence of LWE will be assessed at 2 different time points, approximately 2 hours after contact lens fitting and approximately after 7 days of contact lens wear.

Inclusion Criteria:

1. Must be able to read and understand the study informed consent
2. Must be a minimum of 18 years of age and less than 46 years of age at study enrollment
3. Must be healthy non-soft contact lens wearers (neophytes), or experienced contact lens wearers that have not worn their contact lenses for a minimum of 7 days
4. Have a spherical equivalent refractive error between -0.75 to -6.50DS at the spectacle plane
5. The subject must be able to attend study visits at the prescribed visit times and adhere to the study instructions

Exclusion Criteria:

1. Pregnant and/or lactating females by self-report
2. Presence of current LWE on the upper eyelid (>0.5 in height or width)
3. Has greater than -1.00DC of refractive cylinder
4. Has greater than 1.00D of anisometropia
5. Is aphakic
6. Has clinically significant corneal or conjunctival staining that would prevent contact lens fitting, as assessed with sodium fluorescein dye
7. Has significant ocular surface disease (e.g. Sjögrens Disease, Stevens-Johnson Syndrome, etc.) or significant Dry Eye Syndrome
8. Has clinically significant corneal vascularization or central corneal scaring
9. Has active ocular surface infection (e.g. conjunctivitis)
10. Has a positive history of eyelid surgery or trauma
11. Has a positive history of refractive surgery
12. Takes medications that significantly impact contact lens comfort and/or ocular surface health
13. Has taken part in another contact lens or contact lens solution clinical trial within the last 7 days
14. Is unwilling to have eyes photographed or video recorded