Speaking of Vision -- How 'bout Progressive Bifocals?

Jay Honeck wrote:
Great stuff, Randy -- thanks.

I guess I don't understand this part:
************************************************* ********************************
Progressive lens design
In order to create a no-line progressive lens, there are two large areas of
the lens that you cannot see through. Imagine what an hourglass looks like.
This is the shape of the area of the progressive lens that you can see
through. Objects seen through the areas of the lens to the left and right of
the narrow middle section are highly distorted and you cannot see through
them.

************************************************* ********************************

Why would the areas to the left and right of the middle section be "highly
distorted"? Why aren't those areas simply made to your "distance"
prescription?

I don't fully understand the optics, but that's exactly what my
optician (who's a fellow pilot) explained to me, and when I got my
progressives, that's exactly what I experienced. I couldn't stand it,
and had him re-make the lenses as lined bifocals (which I'm still
struggling to get used to).

Roy Smith wrote:

Jay Honeck wrote:

Great stuff, Randy -- thanks.

I guess I don't understand this part:
************************************************ *********************************
Progressive lens design
In order to create a no-line progressive lens, there are two large areas of
the lens that you cannot see through. Imagine what an hourglass looks like.
This is the shape of the area of the progressive lens that you can see
through. Objects seen through the areas of the lens to the left and right of
the narrow middle section are highly distorted and you cannot see through
them.

************************************************ *********************************

Why would the areas to the left and right of the middle section be "highly
distorted"? Why aren't those areas simply made to your "distance"
prescription?


I don't fully understand the optics, but that's exactly what my
optician (who's a fellow pilot) explained to me, and when I got my
progressives, that's exactly what I experienced. I couldn't stand it,
and had him re-make the lenses as lined bifocals (which I'm still
struggling to get used to).

The above certainly does NOT describe my progressives.

Matt

"Matt Whiting" wrote in message
...
Roy Smith wrote:

Jay Honeck wrote:

Great stuff, Randy -- thanks.

I guess I don't understand this part:
*********************************************** **********************************
Progressive lens design
In order to create a no-line progressive lens, there are two large areas
of the lens that you cannot see through. Imagine what an hourglass looks
like. This is the shape of the area of the progressive lens that you can
see through. Objects seen through the areas of the lens to the left and
right of the narrow middle section are highly distorted and you cannot
see through them.

*********************************************** **********************************

Why would the areas to the left and right of the middle section be
"highly distorted"? Why aren't those areas simply made to your
"distance" prescription?


I don't fully understand the optics, but that's exactly what my
optician (who's a fellow pilot) explained to me, and when I got my
progressives, that's exactly what I experienced. I couldn't stand it,
and had him re-make the lenses as lined bifocals (which I'm still
struggling to get used to).

The above certainly does NOT describe my progressives.

Matt

It does not apply to the dozens of progressives I have had over the decades
either. Sounds like another OWT. Maybe they need to reconsider where they
purchase their eye wear.