sight-reduction tables

例句：

1. 1.The doctor used a sight-reduction table to help the patient see clearly.
   医生使用视力降低表帮助患者看得更清楚。
2. 2.The nurse prepared the sight-reduction tables for the next day's exam.
   护士为明天的考试准备视力降低表。
3. 3.The patient was given a sight-reduction table to test his vision.
   患者被给予一个视力降低表来测试他的视力。