Rob Kenneally

Long hours studying by candlelight for the state teacher's exam results in tired, blurry eyes for Mary Ingalls, prompting a routine visit to the eye doctor; but when Charles is told that Mary's worsening sight is just the beginning of a much more serious problem, the concerned father can't bring himself to tell his beloved daughter that she will, most certainly, soon be completely blind.

Bob's impulsive decision to leave town for a week is received with disastrous emotions by his patients, who seemingly can't make it without him.

A handsome doctor takes an interest in Doris after meeting her on vacation at a ski resort.