Don and Karen have been ministering full time through Global Outreach Mission. Most recently, they have been passionately involved in an outreach entitled "That All May See." Through this ministry, Don and Karen find and fit people in developing countries with glasses and educate them about vision. In this way, they all may see physically. Also they and others use this opportunity to share the gospel so that all may see spiritually.
Check out the latest from them here: https://www.missiongo.org/donate/missionaries/don-and-karen-stauffer