What is the difference between an O-1A and O-1B?

A:

The O-1A is intended for individuals who have extraordinary ability in the sciences, arts, education, business or athletics, which can be evidenced via sustained national or international acclaim. There are several ways in which this can be shows as is clarified further in our articles and free electronic guide.

The O-1B visa is intended for persons in motion picture or television productions. Again extraordinary ability must be shown and can be done so via evidence of recognition in the field.