(Pete is crawling on the floor looking for his pills)
Samantha: Peter, what are you doing?
Pete: Well, what does it look like I'm doing? I'm pretending to be a dog!
MacGyver: Scatter a few stones, create a diversion.
Richardson: How did you think of that?
MacGyver: Uh, don't know, just kinda made sense.
MacGyver: What's goin' on with your eyes?
Pete: What do you mean?
MacGyver: Well, I've been watchin' you bump into things. You came out here for apple juice, and that's orange juice.
(Pete tries to laugh it off and gets apple juice from refrigerator)
MacGyver: Hey, what's goin' on?
Pete: (resigned) It's my peripheral vision.
MacGyver: How bad is it?
Pete: Pretty bad. It's the real reason that I called you in when things fell apart at the railroad station. MacGyver, I have glaucoma.
MacGyver: That's treatable, isn't it?
Pete: Yeah, but mine is complicated. I have... advanced nerve damage—very advanced. It's a little bit like looking down a tunnel with very little light at the end. And I have a lot of trouble with either too much or too little light anywhere. I let it go too long.
The new recurring sub-plot of Pete Thornton's glaucoma-related blindness incorporates star Dana Elcar's own battle with the same condition, which eventually did leave him blind.
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