Ed Robertson declares this to be the worst episode of the series in his book "The Fugitive Recaptured", blaming it on David Janssen's "wretched" performance as a man temporarily blinded and dependent on the kindness of strangers. I couldn't agree less.
Kimble is again after the one-armed man, "Fred Johnson" and corners him in warehouse. They fight in a chemical warehouse and Johnson causes a minor chemical explosion that blinds Kimble, who winds up in a hospital, then reports Kimble to the police. Kimble escapes but still can't see anything and is at the mercy of a couple of hobos he runs into and then of a free-lance photographer who took the picture who led Kimble to Johnson.
As Robertson says, "Kimble bumbles around with his arms flailing and crashes into every garbage can he finds." What do you expect? The guy can't see anything. Robertson sees it as "so broad his performance borders on camp". I saw fear, even panic, desperation, pleading for help- the exact sort of emotions you'd expect him to have in that situation. The worst episode of the series is surely "The Homecoming" from season one, not this one which is actually pretty good.