The Bible's lex talionis—"Eye for eye, tooth for tooth, hand for hand, foot for foot" (Exodus 21:24–27)—has captured the human imagination for millennia. This idea of fairness has been a ...

After taking a medical history, your eye doc will likely start with a visual acuity test. I will often take a retinoscope, and I will shine the light beam into your retina and by seeing the ...