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The average (±SEM) relative changes in choroidal thickness for the lens-treated (filled circles) and fellow control eyes (open circles) of the −3D/pl vehicle controls (A) and caffeine-treated monkeys reared with −3 D (B) and +3 D of imposed anisometropia (C). The solid grey squares represent data from control monkeys. The first and last symbols in each individual function represent the start and end of the treatment period, respectively.
