No judge shall be eligible for benefits under this chapter unless he has qualified under one of the following provisions:

(1) Retirement at two-thirds' the salary paid to superior court judges:

(A) Any judge of a superior court of this state who is in at least his nineteenth year of service as a judge of the superior court computed as provided in this chapter; or

(B) Any judge of a superior court already in service for 19 years on March 9, 1945, as a judge of a superior court and who is still in service as such officer.

(2) Retirement at one-half of the salary paid to superior court judges:

(A) Any judge of a superior court of this state who has attained the age of 65 years and who has completed ten years of actual service as a judge of a superior court; or

(B) Any judge of a superior court who has been in service as a judge of a superior court for at least ten years and who becomes disabled from continuing his duties as judge of the superior court, who shall have attained the age of 62 years, satisfactory evidence of such disability having been presented to the board of trustees and a recommendation of appointment having been made by a majority of the board.