AIM: To evaluate the effect of stereoscopic 4D(S4D)technology as a visual training system in children with hyperopic amblyopia and hyperopic anisometropic amblyopia.

METHODS: Totally 48 patients aged 3-9 years with hyperopic amblyopia and hyperopic anisometropic amblyopia were recruited, including 18 hyperopic amblyopia(36 eyes)and 30 hyperopic anisometropic amblyopia(30 eyes). All patients excluded other eye diseases and received S4D technology training on the basis of refractive correction and reasonable covering. The initial training was mainly to improve visual acuity. Those with visual acuity above 0.6 were treated with disinhibition training and binocular visual function training. The changes of visual acuity and binocular stereopsis before and after training were compared.

RESULTS: The 18 patients(36 eyes)with hyperopic amblyopia were divided into mild amblyopia group(n=13), moderate amblyopia group(n=19)and severe amblyopia group(n=4). 30 patients(30 eyes)with hyperopic anisometropic amblyopia were divided into mild amblyopia group(n=5), moderate amblyopia group(n=13)and severe amblyopia group(n=12). The visual acuity was significantly improved after 60 times of treatment. After 60 times of treatment, stereopsis was significantly improved, which had nothing to do with the initial diopter(P>0.05), but positively correlated with the visual acuity initially and finally(P<0.05), and positively correlated with the amount of anisometropia(P<0.05).

CONCLUSION: S4D technology training combined with traditional treatment can effectively improve the visual acuity and binocular function of 3-9 years old children with anisometropic amblyopia and hyperopic anisometropic amblyopia.