The EB1A is issued for those who have extraordinary abilities. While there is a misconception that you have to have a Phd. to obtain an EB1A, some applicants with Phd might be denied while non-Phd might actually get an EB1A.
For more information visit http://www.peerallylaw.com/en/content/view/eb-1a-extra-ordinary-ability-faqs/