someone who treats or studies problems of the eye muscles, for example having a squint (= when the eyes look in different directions) or having double vision (= when you can see two of everything)

An orthoptist is a specialist who diagnoses, measures and treats a squint non-surgically. 视轴矫正师是诊断、测量和采用非手术方法治疗斜视的专家。

She commutes daily to her job as an orthoptist at the Manchester Eye Hospital. 她是曼彻斯特眼科医院的一位视轴矫正师，每天通勤上下班。