Accommodative Relief for Uncomfortable Non-Presbyopes

The purpose of this study is to determine how multifocal contact lenses affect contact lens comfort in non-presbyopic contact lens wearers. Current soft contact lens wearers who have symptoms of discomfort in their contact lenses will be recruited. Each subject (n = 84) will wear a single vision soft contact lens (Ultra single vision spherical lens) for two weeks and a low add power multifocal (Ultra for Presbyopia) for two weeks. Half of the subjects will wear the single vision lens first, and half of the subjects will wear the multifocal lens first. Initial lens group will be chosen randomly. Subjects will complete surveys that assess their vision and comfort which each lens, and ocular surface and accommodative/binocular vision status will be evaluated at the initial dispense and after wearing each lens for two weeks.

Inclusion criteria

• Visual acuity of 20/25 or better in both eyes with habitual contact lenses
• -0.75 D or more myopic in both eyes
• -0.75 D or less astigmatism in both eyes
• Current single vision contact lens wearer who does not require a reading aid
• CLDEQ-8 score of 12 or more points with habitual contact lenses
• No history of ocular surgery or medication
• Reports digital device use of at least 3 hours per day
• No significant signs of dry eye (grade 1 or less ocular surface staining, Schirmer score of 7 mm or more, and tear break up time of 7 seconds or more in bother eyes)
• No significant binocular vision disorders in both eyes (eso or exophoria of 4 prism diopters or less at distance and near, near point of convergence of 6 mm or less, no history of strabismus or patching)