A single flower does not make a spring.

Progressive multi-focal glasses now become more and more popular. But they require a certain adaptation in the wearing process. We should be scientifically aware of the process of getting adapted to them. For green hand in using multifocal glasses, it is an important lesson to command the methods of seeing objects clearly in different distances.

Objects that are far away: head up; look ahead directly by focusing your sight on the upside of the whole lens.
Keep an angle of about 45
To look at the objects in the mid-distance: you should look through the mid-area of the lens.
Each point form the top to the bottom in the transition zone corresponds each distance from the far to the near.
What problems may occur when people wear progressive and multifocal glasses for the first time?

Slight dizziness. hard to keep balance when walking, require special attention if you do sports or walk up the stairs.
You can feel a change of the space perception, You are unable to distinguish the objects on different distances.
Discomfort in eyes may occur to you when you view near objects as you need to look down by moving eyes to lower part.
You can’t see things clearly if you look through the peripheral area of the lenses.
Therefore, those starting wearing progressive multi-focal spectacles should more move their heads while turing eyeballs less. All in all, people had better use distant, near and intermediate zones to see objects.

Other site about Glasses:
Eyewear & Glasses Wikipedia -- eyewear wiki.
bifocal glasses -- bifocal glasses.
Stylish eyewear-buildable prescription eyewear online shop -- prescription eyewear.
Prescription Eyeglasses|Prescription Glasses --Prescriptioneyeglasses.info -- prescription eyeglasses.
Mens Eyeglasses - cheap glasses , Discount glasses exclusive for men -- cheap glasses.
Mens Eyeglasses,men's discount glasses,mens prescription eyeware,eyeglasss frames for men -- Eyeglasses4man.com -- Mens Eyeglasses.