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.
The value of a Forever stamp is always set as the first-class mail rate. When Forever stamps were introduced in 2007, their value was 41 cents. On May 12, 2008, the cost of a first-class stamp increased to 42 cents, and on May 11, 2009, the cost of a first-class stamp increased to 44 cents. The value of a Forever stamp increased accordingly.