Please register before entering the hospital. You can go to ophthalmology. After entering the ophthalmology department, you tell the doctor that you want to have your eyes tested, and the doctor will give you a list before you can have your eyesight tested. Personally, I think it is best not to buy contact lenses online. The eyes are very fragile and delicate organs. Wearing contact lenses will make your eyes dry easily. This is because your eyes itch. To put it bluntly, you have to put something on them to see it. Good health is more important than anything else! Think twice, I'm not alarmist, I really hope you will seriously consider bringing something invisible! People with myopia had better go to the hospital to have their eyes checked regularly. I will check the intraocular pressure regularly.
If you have to bring your contact information, don't buy it online. Go to a regular hospital.