Abstract

To compare the effect of defocus incorporated multiple segments (DIMS) versus highly aspherical lenslets (HAL) on myopia progression control in 1 year. This retrospective cohort involved children prescribed DIMS or HAL spectacle lenses at Myopia Control Clinic. All children were non responders to atropine. The standardized 1-year spherical equivalent refraction (SER) and axial length (AL) changes from baseline were calculated.
A total of 38 children were included for the analyses (16 in the HAL group & 22 in the DIMS group). Mean age for DIMS & HAL was 9.6 +/- 4.2 and 8.6 +/- 5.1 years respectively. In DIMS group the mean progression of SER & AL was -0.76 +/- 0.2 Diopter (D) & 0.32 +/-0.3 mm which reduced to -3.9 +/- 0.2 D & 0.27 +/- 0.2 mm. In HAL group it reduced from – 0.86 +/- 0.4 D & 0.38 +/- 0.4 mm to -3.9 +/- 0.3 D & 0.28 +/- 0.2 mm
Both the lenses reduced the myopia progression, HAL lenses were more effective than DIMS lenses in reducing the progression of myopia.