瞳孔扩散剂

例句：

1. 1. The doctor prescribed a medication to help the patient's eyesight.
   医生开了一种药物来帮助病人的视力。
2. 2. The patient was given an eyedrop to dilate his pupils.
   病人被给了一滴眼药水以扩大他的瞳孔。
3. 3. The medication is designed to dilate the pupil and improve vision.
   这种药物旨在扩大瞳孔并改善视力。