Octopus Eye Test Helps Prevent Human Sight Loss

Octopuses are very sensitive to light polarization. Human eyes can also detect polarization patterns and a new test can use this effect to measure levels of macular pigments and estimate risk of macular degeneration.

https://journals.biologists.com/jeb/article/224/7/jeb240812/238090/Thresholds-of-polarization-vision-in-octopuses