The O1 visa is a non-immigrant visa for gifted people who have a special ability of some kind.
Once approved, your first O1 visa petition can give you lawful status in the USA for up to 3 years. You can then extend your status for up to 1 year at a time. There is no limit to the number of times you can extend your O1 status.
If you have any questions about anything, please feel free to email me directly at Eliott@NazarianFirm.com.