RecruitingPhase 4NCT06655441

The Effects of 3% Trehalose Ophthalmic Solution on Corneal Epithelial Barrier Function

Sponsor

Southern California College of Optometry at Marshall B. Ketchum University

Enrollment

30 participants

Start Date

Mar 1, 2026

Study Type

INTERVENTIONAL

Conditions

Dry Eye Disease (DED)

Summary

The purpose of this research study is to evaluate the effects of trehalose, an ingredient found in commercially available artificial tears, on the corneal barrier function. The investigators will assess corneal dryness and measure the relative corneal epithelial "barrier" function (the degree to which the cornea can prevent penetration of sodium fluorescein dye into the eye) after using eye drops that contain 3% trehalose for one month.

Eligibility

Min Age: 18 Years

Inclusion Criteria3

Adult subjects, > age 18 years, with moderate-to-severe dry eye, defined as fitting criteria for dry eye stages 3 or 4 of the MGD Workshop Management and Treatment subcommittee report.
Subjects must have normal eyelid position and closure.
For enrollment as aqueous tear deficiency, subjects must have a Schirmer I result of < 5.0 mm wetting in 5 minutes without anesthesia.

Exclusion Criteria13

History or evidence of ocular or intraocular surgery in either eye within the past twelve months. LASIK and other kerato-refractive procedure patients can qualify if the most recent surgery or enhancement was 12 or more months prior.
History or evidence of serious ocular trauma in either eye within the past six months.
History of hypersensitivity to any component of the study medications.
History or evidence of epithelial herpes simplex keratitis (dendritic keratitis); vaccinia, active or recent varicella, viral disease of the cornea and/or conjunctiva; chronic bacterial disease of the cornea and/or conjunctiva; mycobacterial infection of the eye; and/or fungal disease of the eye.
History or evidence of active ocular allergy.
Females who are pregnant, nursing, or planning a pregnancy during the study.
Evidence of greater than mild eyelid deformity (e.g., ectropion, entropion, ptosis).
Use of concomitant topical ocular medications during the study duration.
Individuals using systemic steroids, immunosuppressive agents and/or anti-cholinergic (e.g. cold and allergy medications, tricyclic antidepressants) for treatment of autoimmune connective tissue disease may not be enrolled in the study if they have not been on a stable dosing regimen for a minimum of 30 days prior to the visit.
Individuals with uncontrolled diabetes or history or evidence of peripheral neuropathy.
Active intraocular inflammatory conditions such as iritis.
Individuals wearing rigid gas permeable or scleral contact lenses within the previous six months of enrollment. Subjects can have worn soft lenses, but not within one month prior to enrollment.
Individuals using punctual plugs inserted within 30 days of study start.