Methods To find out the LD children in the whole school, do the VRT test on the LD team and paired control team, then analysis the data of the VRT score.

• 方法 对某小学校的学习障碍(LD) 儿童进行了筛查,并对筛出的LD 儿童和配对的正常儿童进行视觉保持实验( VRT) 测试,并对比分析数据。