Night Vision

As “Game of Thrones” fans know — winter is coming! Let’s hope the white walkers don’t have night vision! This is Sandra Tsing Loh with the Loh Down on Science. We humans aren’t the best at night vision. We detect motion with direction-selective ganglion cells, or DSGCs. Some specifically detect

It’s Lit

Could the light at the end of the tunnel… cure blindness? This is Sandra Tsing Loh with the Loh Down on Science. Your eyes and brain communicate in perfect harmony to let you see. But for kids with amblyopia, or “lazy eye syndrome,” this tango gets messed up. The brain

Laser Vision

Want better vision? How about. . . squishing your eyeballs? This is Sandra Tsing Loh with the Loh Down on Science. Eye shape is the key to perfect vision. But most of us have eyes as wonky as a Picasso portrait. Lasik eye surgery fixes vision by reshaping the eye’s