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Evaluating and Improving Functional Driving Vision of Patients With Astigmatism

CompletedNA

Sponsor: University of Virginia

Conditions: Astigmatism

Interventions: 1-DAY ACUVUE® MOIST contact lenses, 1-DAY ACUVUE® MOIST for ASTIGMATISM contact lenses, No contact lenses

Countries: United States

Small amounts of astigmatism are often uncorrected in contact lens wearers. The effect with respect to driving is unknown, but it could threaten safe operation of a motor vehicle, especially under conditions such as nighttime driving when visual abilities are highly challenged. This study measures driving-specific visual abilities and simulated driving performance in participants with astigmatism who either have or do not have their astigmatism corrected. The primary hypothesis is that at a tactical level, contact lenses correcting for astigmatism will result in safer driving performance overall. The secondary hypothesis is that at an operational level, contact lenses correcting for astigmatism will result in better driving-specific visual performance.

Eligibility overview

Sex: ALL

Age: 18 Years to 39 Years

Healthy volunteers: Yes

Study type: INTERVENTIONAL

Eligibility criteria

Inclusion Criteria:

* Adult licensed drivers between the ages of 18-39, similar number of males and females will be studied who meet the following inclusion criteria:
* Bilateral corrected vision of 20/40 or better
* Bilateral astigmatism between 0.75 to 2.0 diopters, with spherical correction from -1 to -6
* No active eye infection
* No defective peripheral vision
* Do not have correction for bifocals
* Routinely wear contact lenses more than 4 times per week
* Routinely drive a car more than 4 times week
* Do not have a history of motion, sea or big screen (e.g. IMAX) sickness or experience persistent Simulation Adaptation Syndrome

Exclusion Criteria:

* Bilateral corrected vision of worse than 20/40
* No astigmatism
* Active eye infection
* Defective peripheral vision
* Wear bifocals
* Wears contact lenses less than 4 times per week
* Drives infrequently (less than 4 times per week)

Locations (1)

Charlottesville, Virginia, United States