Trabant design was applied in this experiment. The number of samples of control groups was added so as to raise the truth of data. 本实验采用完全随机设计,为增加对照组数据的精确性,而增加了对照组的样本数量。
And carries on two kinds of perimeters 'inspections in the same day, the order is trabant. 并在同一天内分别先后进行上述两种视野计的视野检查,顺序随机。