I don't think I'm fully conveying the spectacular nature of what the author claims he saw, so I'll quote a brief exerpt from the book:
"Suddenly and without ceremony, he roughly took the first man in line -- an elderly, well-dressed gentleman in an impeccable gray sharkskin suit, firmly grasped his shoulders and held him against the wall, directly under the sign THINK OF JESUS. Puharich, standing next to the man was startled by the action, and wondered what to expect next.
Then, withoug a word, Arigo picked up a four-inch stainless steel paring knife with a cocobolo-wood handle, and literally plunged it into the man's left eye, under the lid and deep up into the eye socket.
In spite of his years of medical practice and experience, Puharich was shocked and stunned. He was even more so when Arigo began violently scraping the knife between the ocular globe and inside of the lid, pressing up into the sinus area with uninhibited force. The man was wide awake, fully conscious, and showed no fear whatever. He did not move or flinch. Then Arigo levered the eye so that it extruded from the socket. The patient, still utterly calm seemed bothered by only one thing: a fly that landed on his cheek.
Within a few moments, Arigo withdrew the paring knife from the eye, bringing out with it a smear of pus on the point, He noted it with satisfaction, then unceremoniously wiped the knife on his sport shirt and dismissed the patient. "You will be well, my friend," he said. Then he called the next patient. The entire "examination" had taken less than a minute.
The scene began moving so swiftly that neither Puharich nor Belk had time to collect his thoughts. Puharich was at least able to think fast enough to stop the first patient and make a quick examination of the eye. There was no laceration, no redness, no sign of irritation. The patient explained through the interpreter that he felt altogether normal, that he had had no anesthesia beforehand, and that he had complete faith in Arigo."