Toric Contact Lens Performance Study

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.

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)