It is ok for you to wear colored contacts for making your eye look better. But as we all know, beauty costs. You have to do many things when you wear colored contacts. First, you must pay attention to the sanitation of colored contacts. Every time before you wear them, you must make sure that your hands are clean enough. And every day you must change lotion to clean them twice. Second you mustn't wear them for over 8 hours. After 8 hours, your eyes may be dry and feel uncomfortable. Third, you should change a new pair of colored contacts every half a year. You can go to official hospital to get colored contacts with zero degree. If you feel your eyes sick when you wear them on, ask a doctor for help.
Yeah, it is OK. There are many colored contact lenses with no prescription on the market. They are just regarded as accessory to make your look more beautiful. You could have a try. But you should keep the good habit of hygiene to make sure that not letting your eyes get infection.
Yes, of course. Even if you have good eyesight, you can still wear colored contact lenses. What you need to do is to choose the colored contact lenses with non prescription. And the lenses won't change your vision or damages your eyes. They only wearing for looks. So. just go ahead.
Yes you can get contacts that dont have a prescription but is different from the colour of your iris. However, as most other people here have said, don%u2019t keep them in for too long.But if your really concerned, go see an optomotrist.