I just watched the movie Compulsion, staring Orson Welles and other well-known actors. I don't want to discuss the movie itself, just one aspect that seemed illogical (which I have a tendency to be bothered by).
So the prosecutor was trying to locate the owner of a pair of glasses and narrowed it down to three people based on something to do with its unusual hinge. But he didn't mention comparing the strength of the lenses to the prescription of the suspect, which would seem to have been a better way to match them to the owner. It seemed like such an obvious thing was overlooked. Is there an in-universe explanation for this?