A New Study Helps Explain Tetrachromacy -- Science of Us
https://www.thecut.com/2016/03/a-new-study-helps-explains-why-some-people-can-see-so-many-colors.htmlA Worm’s Hidden Map for Growing New Eyes - The New York Times
https://www.nytimes.com/2020/06/29/science/flatworms-eyes-regeneration.htmlEnhanced emotional response to both negative and positive images in post-traumatic stress disorder: Evidence from pupillometry - ScienceDirect
https://www.sciencedirect.com/science/article/pii/S030105112030082XIs Tetrachromacy Real? Definition, Causes, Test, and More
https://www.healthline.com/health/tetrachromacyMolecular and biochemical mechanisms of human iris color: A comprehensive review
https://onlinelibrary.wiley.com/doi/abs/10.1002/jcp.29824Opinion | I’m Going Blind. This Is What I Want You to See. - The New York Times
https://www.nytimes.com/2022/08/16/opinion/blindness-retinitis-pigmentosa.htmlQuestion from my 4.5 yo son: What color eyes did dinosaurs have? : askscience
https://www.reddit.com/r/askscience/comments/slra4i/question_from_my_45_yo_son_what_color_eyes_did/Spiders can see the invisible laser from iPhone LiDAR camera : ThatsInsane
https://www.reddit.com/r/ThatsInsane/comments/xud0zw/spiders_can_see_the_invisible_laser_from_iphone/This is what eye rubbing looks like through an MRI scanner. : interestingasfuck
https://www.reddit.com/r/interestingasfuck/comments/z4zzux/this_is_what_eye_rubbing_looks_like_through_an/Wild hummingbirds can see colors that humans can't — study
https://www.inverse.com/science/wild-hummingbirds-can-see-colors-that-humans-cant-studyYoung nearsighted kids benefit from bifocal contact lenses, study shows
https://news.osu.edu/young-nearsighted-kids-benefit-from-bifocal-contact-lenses-study-shows/