What happened to Hitler in 1918 after hypnosis?

On the evening of October 13, 1918, at the front near the Belgian
city of Verwick, the British 30th Division attacked the positions
of the 16th Bavarian Regiment. Shells filled with mustard gas
(mustard gas) fell on the heads of the Germans. One of them, at
seven o'clock in the morning on October 14, exploded near the
field kitchen, where Corporal Adolf Hitler and his colleagues were
having breakfast. Hitler's eyes began to "burn with pain" from the
gas, and after a while he completely ceased to see. Since there were
no external signs of damage to the eyes and optic nerve, the
frontline doctors sent Hitler to the psychiatric ward of the reserve
hospital in the city of Pasewalk
There the patient was examined by a psychiatrist Edmund Forster.
According to the testimony of the doctor Karl Moritz Kroner, who
was then working in Pasewalk, Forster diagnosed Corporal Hitler
with "hysterical blindness." This meant that physically the patient
was able to see, but his consciousness refused to "accept" visual
information. Hitler's body unconsciously "simulated" blindness,
so as not to return back to the trenches. The treatment started by
Dr. Forster quickly restored Hitler's sight. A month later, the
corporal recovered. However, he was discharged from the infirmary
as a completely different person.
In 1938, Ernst Weiss, in his novel "The Witness," published the
story of a doctor treating a blind soldier with the initials A.H using
hypnosis. Researchers do not exclude that a copy of Hitler's medical
record made by Forster could have been at Weiss's disposal. This
hypothesis was taken seriously by historian Rudolph Binion and
forensic psychiatrist David Post, as well as neuropsychologist David
Lewis, author of The Man Who Invented Hitler. According to their
reconstruction of events, Dr. Forster relied on Hitler's willpower
and patriotism during hypnosis. The result, as you know, exceeded
the doctor's expectations. Hitler not only received his sight, but
also devoted his further life to the "revival of Germany."
During the era of the Weimar Republic, Professor Forster thrived
as head of the Clinic for Nervous Diseases in Berlin. But when his
former patient came to power in 1933, the psychiatrist started to
get into trouble. In August, a scammer wrote to SA that Forster
favored the Jews who worked at his clinic. When the investigators
began to "dig", it turned out that the doctor was disloyal to the
authorities, in particular, he did not believe in the official
version of the Reichstag arson. This was enough for Forster to
be fired from the clinic. On September 11, 1933, the doctor
committed suicide under strange circumstances.