The Jobs That Still Test for Colorblindness (and What They’re Looking For)
Colorblindness testing didn’t stay frozen in the early 20th century as a relic of wartime recruitment. It’s still a very real gatekeeping requirement for a […]
How Wine and Whisky Judges Train Their Eyes, Not Just Their Palates
Watch a professional sommelier work through a glass of wine and you’ll notice something odd if you’re paying attention: they spend a surprisingly long time […]
Mantis Shrimp Have 12 to 16 Color Receptors to Our 3, and Somehow See Color Worse
The human eye gets by on three types of color-sensing cone cells, tuned roughly to red, green, and blue light, and that modest setup is […]
Why Humans Are the Only Primates With Visible Eye Whites (and What It Reveals)
Watch a dog for long enough and you’ll notice it can follow your gaze remarkably well, glancing wherever you look. Watch a chimpanzee try to […]
Why Cats’, Dogs’, and Deer Eyes Glow in Headlights (and Yours Don’t)
Drive down a rural road after dark and sooner or later a pair of eyes will appear at the edge of your headlights, glowing like […]
The Man Who Invented the Colorblindness Test (and Why It Became Mandatory)
In 1794, a chemist in Manchester, England, noticed something odd about a pink geranium. Under candlelight, it looked blue to him. His friends insisted it […]
Why Judges in Ancient China Wore Sunglasses in Court
Picture a courtroom with no jury box, no gavel, and no witness stand as we’d recognize them, but with a judge sitting at the front […]
The Traveling Eye Surgeons Who Cured Cataracts With a Needle and No Anesthesia
In March of 1750, a well-dressed Englishman rolled into Leipzig in a coach painted from top to bottom with giant eyeballs. A Latin motto ran […]
The Role of Zinc in Retinal Pigment Epithelium Function
Zinc appears on every eye supplement label. It is listed in the AREDS2 formulation. Nutritional guidance for macular degeneration reliably mentions it. And yet the […]
Can Saffron Supplementation Slow Macular Degeneration Progression?
Saffron is not a compound that most people expect to encounter in a serious discussion of macular degeneration research. It is the world’s most expensive […]