In this study, researchers looked at whether single-use, daily disposable contact lenses have a lower infection rate than two-week or monthly disposable lenses. Interestingly, daily disposable ...

your eye doctor may prescribe more expensive "multifocal" contact lenses. Costco and Sam's Club sell Proclear 1 Day Multifocal daily disposable lenses, by Cooper Vision, for $75 per box of 90 lenses.

Silk, Alvin J., Bruce Issacson, and Marie Bell. "Vistakon: 1 Day Acuvue Disposable Contact Lenses." Harvard Business School Case 596-087, March 1996. (Revised February 1999.) ...