Toric Contact Lens Performance Study

University of Houston

Status: Completed

Conditions: Astigmatism

Treatments: Device: Dailies Aqua Comfort Plus Toric; Device: Dailies Aqua Comfort Plus Sphere

Study type: Interventional

Funder types: Other

Identifiers

NCT03546647

Study00000682

Details and patient eligibility

About

This study seeks to quantify digital visual performance and subjective visual acceptance of toric contact lenses as compared to spherical lenses in low to moderate astigmatic patients.

Full description

This is a prospective, single site, randomized, masked, crossover study. This study will evaluate the ability of toric contact lenses to decrease signs and symptoms of asthenopia and improve digital reading performance. Symptoms and objective near vision outcomes will be measured at baseline and after 1 week of wear with each correction.

Enrollment: 35 patients

Sex: All

Ages: 18 to 39 years old

Volunteers: Accepts Healthy Volunteers

Inclusion and exclusion criteria

Inclusion

+6.00 to -6.00 D vertexed sphere power and -0.75 to -1.50 D vertexed refractive cylinder in the right and left eyes Best corrected acuity of 20/25 or better in each eye Self report of at least 4 hrs/day using digital devices Current/established soft contact lens wearer (has worn contact lenses in the past year)

Exclusion An optometrist or optometry student History of ocular pathology or surgery Binocular vision disorder (i.e., tropia, convergence or accommodative insufficiency) Gas permeable lens wear for at least 3 months Presbyopic (based on refraction)

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Crossover Assignment

Masking: Double Blind

---

35 participants in 2 patient groups

Toric, Then Sphere

Experimental group

Description:

Participants who received Toric contact lenses first and spherical lenses after 10 days

Treatment:

Device: Dailies Aqua Comfort Plus Sphere

Device: Dailies Aqua Comfort Plus Toric

Sphere, Then Toric

Experimental group

Description:

Participants who received Spherical contact lenses first and Toric lenses after 10 days

Treatment:

Device: Dailies Aqua Comfort Plus Sphere

Device: Dailies Aqua Comfort Plus Toric