Wednesday, February 1, 2012
I checked in with the closest available source: my father, an ophthalmologist. He informs me that cataract surgery was regularly done back then, but it was a pretty barbaric procedure compared to how it's handled today. There were no implants to replace the lenses, so doctors simply removed the clouded lenses and fitted the patient with thick glasses. Even this was usually an improvement over advanced cataracts, which blocked out most light. But the procedure of removing a lens from an eye was very dangerous: there were no sutures available for stitching up the eye post-operatively, patients had to remain perfectly still for weeks afterwards to allow the eye to heal (held in place by sandbags), and the chances of infections and other complications were very high. Nonetheless, Mrs. Patmore's prognosis was certainly possible, although if she's walking around without glasses in season 2, that will be a bit surprising.
Meanwhile, as a followup, where did lens implants come from? According to my father, it had to do with World War II ball turret gunners on bomber aircraft. It was common for the gunners to be hit by shards of the plastic from which the ball turrets were made, and occasionally these shards would wind up in the eyes of the gunners. Doctors at the time found that the eye was remarkably tolerant of the plastic shards and few infections developed. It was later theorized that such plastic could be molded into a replacement lens for cataract patients.