We shouldn’t put much stock in numbers like “$300/surgery” unless there’s been a good evaluation: it’s very common that you end up with much lower benefits than expected per dollar once you start digging in. For example, perhaps existing funders already cover the cases where the surgery would prevent blindness, charities aren’t willing to focus on the people with the worst vision, or the life expectancy of recipients is low because cataracts develop late in life.
Agree.