Special Immigrant Visa
If a permanent resident (green card holder) remained outside the U.S. for over a year without first receiving special permission (re-entry permit, see above), they may need to request a special immigrant visa in order to return to the U.S. in LPR status. You must apply for a special immigrant visa at the local consulate with proof of the reason that required the stay outside the U.S. You must also prove that there was no intention of abandoning your residence in the U.S.