Why are my progressive lenses blurry at the bottom?

Why are my progressive lenses blurry at the bottom?

The strength of progressive lenses is actually the factor that leads to initial peripheral blurriness. Progressive lenses tend to be blurry on the sides because each lens promotes three fields of vision: A lower lens segment designed to help the wearer see objects within very close proximity.

How far off can PD be?

Typically, adult pupillary distances range between 54 to 68 mm and children range from 41 to 55 mm. During the day, your PD can vary about 3-4 mm depending on your viewing distance.

Are there any problems with the progressive lens?

Problems with progressive lenses due to two different astigmatisms for near and far vision. In such a case if two different astigmatisms are needed the progressive lens has to change its needed progression in the corridor as you look down. Some people feel extremely restricted in the reading zones.

What causes blurry vision with a progressive lens?

What oftentimes causes trouble, in the beginning, is the amount of surface astigmatism on the sides. It will always produce blurry vision as you look through these areas. As you are younger there will be less surface astigmatism because of a less needed reading power.

Where is the globular effect on a progressive lens?

You can see directly the globular effect in the lower half of the lens as reading power gets higher. In the picture above you can see the different zones of the progressive lens as I move my hand with the lens further away or closer to the camera. No manufacturer in the world is able to produce your progressives without the surface astigmatisms.

Can a progressive lens be made without surface Astigmatisms?

No manufacturer in the world is able to produce your progressives without the surface astigmatisms. That is really important to understand for you.