Optical Coherence Tomography (OCT) , which measures the reflection of laser light much like an ultrasound measures the reflection of sound, can directly measure the thickness of the nerve fiber layer and create a three dimensional representation of the optic nerve.
Price of a Stamp. The current price of a first class stamp is 49 cents. A domestic first class letter (1 oz.) is 49 cents. The price of each additional ounce is 21 cents.It will cost you 34 cents to send a domestic postcard.he current price of a first class stamp is 49 cents. A domestic first class letter (1 oz.) is 49 cents.
Short answer, currently 47 cents (US). Long answer, Forever stamps will always be worth whatever the current 1st class standard 1 ounce letter rate is. That rate may increase to 49 cents on Jan. 22nd. In which case, any Forever stamp would be worth 49 cents.