Benefits of bifocal contact lens may depend on aberrations

Fort Lauderdale, FL-Researchers at the University of Houston College of Optometry are trying to understand why certain individuals do not gain bifocal vision with a multizone bifocal contact lens. The reason could be dependent on an individual's optical aberrations, noted Joy A. Martin, an OD and PhD student, who spoke during the annual meeting of the Association for Research in Vision and Ophthalmology.