O1A visa benefits those of extraordinary ability in the business, arts, science, education, or athletics. With an O1A visa, a worker is normally approved for a period of up to 3 years. These visas are for aliens who are planning to provide service as a scientist, business professional, a researcher, or any profession in that designated field.
Please note that people in different fields have different standards of review.
An O1A visa is not a permanent visa. If you are looking for something permanent check out our EB1-A section.