Is it necessary for the railway bureau to recruit railway signalmen to be nearsighted? (No color blindness and weakness), thank you, (going to sign kunming railway administration)

Railway signal professionals are required to be naked at 500 degrees, correct above 1.0, and have no color blindness or weak color. There used to be rules, but now they are not very strict. Generally speaking, it's almost enough. However, after reporting, some units will ask for a medical examination. If problems are found, they will be raised. Take a pair of contact lenses when you have a physical examination.