"What if one eye fails the physical examination?"
If one eye is still unqualified after wearing glasses, then it belongs to monocular visual impairment. The other eye, the excellent eye, can still apply for a driver's license of c 1 if its naked vision or corrected vision is above 5.0 on the logarithmic visual acuity chart and its horizontal visual field reaches 150 degrees.
"The higher the driver's license level, the stricter the vision requirements."
C 1 driver's license requires a vision of 4.9 or above. Those who apply for large buses, tractors, city buses, medium-sized buses, large trucks, trolleybuses and trams should have naked-eye vision or corrected vision above 5.0 on the logarithmic visual acuity chart.
"Does learning to wear glasses or contact lenses matter?"
Because there is no explicit provision, everyone can wear glasses or contact lenses to take the driving test. But I suggest you wear a pair of glasses when you take the driver's license test. Because different glasses still have a certain influence on the angle, for example, Xiao Wang usually wears frame glasses when learning to drive, but wears contact lenses when taking the exam, so he is likely to deviate from the direction or press the line when carrying out the project through the same reference point.