Sure, but the procedure for testing vision is far more precise than how we diagnose issues with someone's mind. There's just no way to know 1) to what degree someone's neurology differs from the "norm" 2) if the adderall is truly having the effect of "normalizing" the patient's brain or if it just appears that way to an outside observer.

These are dangerous stimulants that are shockingly similar to readily abused street drugs.