Monday, January 14, 2013
Contact Lenses and Myopic Defocus
“Bifocal soft contact lenses and corneal reshaping lenses vary in their ability to provide myopic defocus to the peripheral retina, according to US researchers writing inOptometry and Vision Science,” reports News Medical. “Indeed, their study failed to show that bifocal soft contact lenses can provide peripheral myopic defocus, raising questions about the mechanism by which these lenses slow axial elongation of the eye. Anita Ticak (University of Houston, Texas) and Jeffrey Walline (Ohio State University, Columbus) studied 14 myopic individuals aged 8-35 years, of whom nine were female and 12 were White. The average spherical equivalent noncycloplegic manifest refraction for the right eye was -2.84 diopters.” Read more.