合格的观察对象要求大于40岁，在参加研究前未患有原发性开放型青光眼并且自愿接受眼睛测试的随访。

Eligible participants were at least 40 years old, did not have POAG at the beginning of the study, and reported receiving eye exams during follow-up.

youdao

合格的观察对象要求大于40岁，在参加研究前未患有原发性开放型青光眼并且自愿接受眼睛测试的随访。

Eligible participants were at least 40 years old, did not have POAG at the beginning of the study, and reported receiving eye exams during follow-up.

youdao