Dallas #surgical center stops operations after 'compromised' IV bag found It was unclear what the IV bag was #contaminated with or how it came to be. https://t.co/v6sNdvoEgC
For rare individuals known as #tetrachromats , who inherit an extra type of cone cell in the eye, the world is more richly colored than most of us can imagine.
#optometry#ophthalmology#colorblind https://t.co/MgMQUY6Wau