I'm curious why such a seemingly high value opportunity hasn't attracted massive funding from philanthropy - at that cost a single billionare feeling generous could theoretically eradicate this form of blindness. But more realistically, foundations like Gates or Zuckerberg/Chan with excellent oversight and due diligence could surely jump on something like this and make a huge dent.
Not surprising at all, there's lots of even higher-valued opportunities that billionaire philanthropists will be quite inclined to fund. E.g. effective altruists credit the B&MGF with basically removing all possible "room for more funding" wrt. vaccinations in low-income countries, which would otherwise be a very high impact intervention.
Is there something I (we) are missing here?