system
Given the following post, respond as if you're commenting on Reddit:
human
[The Twilight Zone: Time Enough At Last] How long would it have taken last man on Earth Henry Bemis to die?

At the end of the episode, poor Henry is nearly blind   as a result of accidentally breaking his glasses. He is emotionally wrecked, a fair distance away from the food he discovered earlier on in the episode, in the middle of an irradiated wasteland, and a smoker. 

Realistically, how long could he have survived? Is it possible that he could have found another pair of glasses?
gpt
Realistically not long. It'll be difficult to accurately gauge given all the variables but no more than 5 years. Food spoilage will be the immediate concern. Radiation poisoning the most likely cause of death if his food doesn't run out first and he avoids the worst fallout. But finding a new pair of glasses will be next to impossible unless his prescription is a common one and he knows where the local optometrist is. He could probably get by finding a pair of reading glasses reducing his impairment but the risk to reward of searching a wasteland will be minimal given his near blindness. Best odds i give him a month before he wanders into a radioactive hot zone by accident or consumes tainted food and dies of dehydration from it.