Before revision: The Greens' Refractor remained unchanged for over four decades, but sales slipped when AO introduced the Ultramatic RxMaster with its revolutionary yoked JCC in 1967, and production of the Greens' Refractor finally ended in the late 1970s.
After revision: The Greens' Refractor remained unchanged for over four decades, but sales slipped when AO introduced the Ultramatic RxMaster with its revolutionary yoked JCC in 1967, and production of the Greens' Refractor finally ended in the mid 1970s.