(a) Any other provision of law to the contrary notwithstanding, any person who has been appointed to the office of senior judge under this chapter and who is (1) 65 years of age or older or (2) any person who, after being appointed to the office of senior judge under this chapter, becomes disabled from continuing his official duties as a senior judge may become a nonresident of this state and may upon a doctor's order retain his office as a senior judge despite his nonresidence in the state and may continue to receive his retirement salary as a senior judge under this chapter. The disability of a senior judge shall be determined under the procedure specified in subsection (c) of Code Section 47-8-40.

(b) No senior judge who is a nonresident of the state shall preside in any court of this state while a nonresident.