Dr Johnny shows his two new replacement doctors, Dr Gary and Dr Rose the eyes, blinded by cataract, of a 41-year-old man who suffers from diabetes.

Dr Johnny had made the diabetes diagnosis a few days earlier on the basis that the early onset of cataract is indicative of diabetes.  There is a regular cataract clinic at the Clinic and so the man's sight should be restored by the simple removal of the cataracts.  He can then live a more-or-less normal life again except for having to make 2 trips to the Clinic a day for his insulin treatment.  Probably, once his sight is restored, he will be able to give himself his own injections without going to the clinic.