为了治疗弱视，医生建议孩子每天遮住健康的那只眼睛几个小时。

To treat ___lazy-eye, the doctor suggested covering the stronger eye for a few hours each day.

医生建议在孩子五岁前治疗弱视，以避免长期视力问题。

Doctors recommend treating ___lazy eye before age five to avoid long-term vision problems.