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将６～７岁学龄前儿童１２０名分为３组，每组４０名（男、女各半），即单纯补锌组、复合微量营养素加锌组和单纯补复合微量营养素组，实验期为１０周。以实验前后血清锌含量和快速暗适应恢复时间为测定指标，观察受试者暗适应功能的变化。实验结果表明：补充足够复合微量营养素的同时补充锌，对提高机体暗适应功能可以取得更佳的效果，且能有效改善儿童锌营养状况。
One hundred and twenty children aged 6-7 years old were divided into three groups of 40 (male and female half), that is, pure zinc supplement group, compound micronutrient plus zinc group and simple supplement complex micronutrient group. The experimental period was 10 weeks. Serum zinc concentration and fast dark adaptation recovery time before and after the experiment were used as indexes to observe the changes of subjects’ dark adaptation function. Experimental results show that supplementation with enough micronutrient supplementation while supplemented with zinc can improve the dark adaptation of the body and achieve a better effect on zinc nutrition in children.