Evaluating visual performance of myopic children wearing highly aspherical lenslet spectacles

Abstract

Objectives: Evaluating visual acuity and subjective responses of myopic children with highly aspherical lenslets (HAL) in comparison to those with conventional single vision lenses (SVL). Research objects and methods: A prospective, randomised, double-blinded clinical trial on 119 myopic children aged between 7 and 13 years old, with spherical equivalent refractive error ranging from -0.75D to -4.75D, astigmatism no more than -1.50D and anisometropia equal to or less than 1.00D being conducted at Department of Ophthalmology, An Sinh Hospital. Results: Monocular distance and near visual acuity at six-month visit with HAL and SVL were 0.03±0.03, 0.04±0.03 LogMAR (p=0.235) and 4.0±0.0, 4.0±0.2 N notation (p=0.082), respectively. At the three-month visit, HAL was found to be more difficult to adapt than SVL (p=0.023). Visual performance satisfaction in studying activities with HAL was comparable to SVL (p>0.05) but in dynamic activities, HAL showed a lower level of satisfaction (p<0.05). Conclusions: Children’s adaptation to HAL was high. Distance, near visual acuity and satisfaction with HAL in studying activities were comparable to SVL. Less than 10% of children were not satisfied with HAL in dynamic activities.