Re: New Rx

On Jul 26, 4:46 pm, Dan Abel <da...@xxxxxxxxx> wrote:

"Ms.Brainy" <mikabra...@xxxxxxxxx> wrote:

BTW, my best possible VA with the new glasses will be 20/30 in the
good L eye (due to the immature cataract) and 20/50 in my damaged R
eye. Not perfect, but good enough for driving. I never saw any VA
described for intermediate or near distance

If there was such a prescription, I would be interested
in 10/10 vision, 2/2 and 1/1 (all measured in feet). I believe that I
can get this acuity with my glasses. Am I mistaken?

I don't know what this means.

Why? What's so magical about 20 feet? Most people's daily
activities, especially if they are of the presbyopic age, do not
require distance vision but rather intermediate and near. I found
long before my special eye problems began that my computer glasses
served me better around the house and for most of my indoors daily
activities. I switch to my distance glasses only for driving.
Wouldn't it make more sense to test and prescribe vision for 12, 10 or
5 feet instead of 20? Or in addition to 20? Does the formula for
"add" or "subtract" always work?

In any case, what counts is how well you
can see. I would suggest measuring the distance you read at, and the
distance from your eye to the computer screen, and give this information
to the OD next time you are checked.

I checked it with the following results, which I think are typical to
most people:

24" - 28" for computer
8' - 12' for TV viewing (in my case it's 10')
22" for relaxed reding
10" - 14" for reading & writing at the desk

These are the activities for which I need the sharpest vision. So if
it was up to me I would have an indoor tri-focal (or progressives)
pair of glasses to provide the sharpest vision at 10' (upper region),
2.5' (middle region), and 1' (lower region). And I would have a
driving bi- or tri-focal pair to give me the best distant vision, with
reading lower portion and something in the middle, maybe for 5'
vision.

But this is not what I will get, unfortunately. Moreover, the middle
portion of any tri-focals or progressives will be of limited height
(probably 10mm), which is practically almost useless. Why? I have
inquired about the possibility of having a larger middle section, and
was told that it does not exist, they don't make them this way. This
is very frustrating. The intermediate power is not even mentioned on
the prescription.

I am ready for a revolution!




.

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