First link: Patients were psychiatric nurses, faking specific illnesses during their whole stay. (Rosenhan had various people faking atypical symptoms until admission.) Doctors believing them aren't to blame.

Among the findings of the project were that patients frequently found it difficult to get information on their treatment

Agrees with my experience. A computer for patients and access to Crazy Meds help, but I don't know an easy fix for less geeky patients.

Second link: That's a pretty good test. However, the doctors were shown patients who had been treated and were doing well. It's harder to diagnose short-sightedness if your patient is wearing contact lenses.

So neither of these tests are nearly as stringent as Rosenhan's.