In a small study, US researchers found dual-focus (DF) contact lenses (CLs) were effective in teenagers and young adults with high myopia.
Published in Ophthalmic and Physiological Optics the study of eyes with myopia ranging from -6.50 to -9.25D compared the refractive and accommodative impact of CooperVision’s MiSight 1 day CL with approximately +2.00D of power in two annular treatment zones with that of a single-vision CL in 13 highly myopic eyes, said Indiana University researchers.
Researchers confirmed MiSight 1 day introduced lower amounts of myopic retinal defocus at close viewing distances compared to the eyes of children and young adults with lower levels of myopia. “However, the +2.00D power in the treatment optical zone of the DF contact lens generated a combined effect of reducing hyperopic retinal defocus while introducing myopic defocus into the retinal image, relative to SV correction, even in highly myopic eyes,” they said.
