Bird retinas work without oxygen from blood vessels, instead they power themselves with a flood of glucose that feeds glycolysis

https://www.newscientist.com/article/2512692-bird-retinas-work-without-oxygen-and-now-scientists-know-how/

3 Comments

  1. This is such an amazing concept, and one that personally interests me.
    My brother had a genetic disease that caused the blood connections to his retinae to break down over time, eventually leaving him completely without vision.
    Completely unrelated, he loved crows and would bring seeds to his feathered friends in the local park, where they would sit and “talk” with him.

    He would have loved to hear that birds were structurally unable to suffer from his issues.