Nash equilibrium. In game theory, the Nash equilibrium is a solution concept of a non-cooperative game involving two or more players in which each player is assumed to know the equilibrium strategies of the other players, and no player has anything to gain by changing only his own strategy.
This number represents your PD in millimeters. 5 MEASURE YOUR PUPILLARY DISTANCE ZENNI Â® TIPS ËMeasure this paper against a ruler to assure printout is accurate. ËMost adults have a PD between 54 - 74mm. ËMost children have a PD between 43 - 54mm. ËTake a few measure-ments for consistency. WHATâS PD? The Pupillary Distance (PD) is the distance between the pupils of the eyes, center to center, in millimeters. A PD should be provided as part of your prescription. Read more about Pupillary Distance and how to read your prescription on our website by visiting: zennioptical.com/measuring-pd PD = 56 FOLD FOLD 0 10 20 30 40 50 60 70 80 5 15 25 35 45 55 65 75 USING A MIRROR 0 10 20 30 40 50 60 70 80 USING A FRIEND 5 15 25 35 45 55 65 75 LOOK IN A MIRROR OR FIND A FRIEND Stand 8 in. (20 cm.) away from a mirror or a friend. Place & hold the PD ruler against your brow. Keep your face straight. 3 (20 cm) 8 in MIRROR
Ask Your Doctor. You can also get this information from your doctor or from a licensed optician. If you have two PD numbers on your prescription, you have either been given both the Distance/Reading or Right Eye/Left Eye. Here's what you do: Two same number: (Ex. 30/30) Add them together (Ex. 60 is your PD). Two low numbers*: (ex. 30/31) The first number is for the right eye (O.D.) and the second number is for the left eye (O.S.). *Place it in the Customer notes section of the order form. Two high numbers: (Ex. 62/59) First number is your Distance PD and the second is your Near PD (for reading-only glasses). As a Guideline: Most adults' PD's are between 55-65. Most kids' PD's are between 42-54.