6. February 2016 11:30
Multifocal contact lenses are generally used in patients suffering from presbyopia (a condition affecting people over the age of 40 and resulting in poor near vision). However, a team of researchers have recently carried out a study to check whether such lenses can also be used in non-presbyopes and compared their performance with single vision lenses.
The study included 44 short-sighted individuals aged 18-35 years, who were first fitted with AirOptix Aqua contact lenses (which were used as control lenses), and then with single vision and multifocal ones. After 1 hour of lens wear, the subjects rated the clarity of vision, comfort during head movement as well as overall comfort and the amount of ghosting at distance. In addition, they had also distance high contrast visual acuity, central refraction and lens centration evaluated by the researchers.
Single vision lenses provided vision very similar to the control contact lenses. In contrast, multifocal contact lenses seemed to correct vision less effectively than the control lenses, as about 85% of the subjects preferred AirOptix Aqua over the multifocal option.