Re: Advice, vdu glasses from reading prescription

On Sun, 28 Oct 2007 16:59:16 -0500, Mike Tyner wrote:

"Mr Edward" <nospam@xxxxxxxxxxxx> wrote

Something's wrong. If you're 53, it's inconsistent that a +175 add should be
clear at 35 cm.

Not impossible, just off from what we'd expect. Normally it takes about
+2.75 to get clear vision at 35 cm.

If you've actually measured it, I'd ask you to re-measure and determine the
_range_ rather than the midpoint.

I'm guessing you mean you can see _up to_ 35 cm away. How far out can you
push that same target before it starts to blur? 40 cm? 50?

-MT

Thank you for your reply....Yes you are right! I didn't measure it before,
I was repeating what I thought the optician said and I must have made a
mistake, sorry.

OK Ive measured the range of clear focus and it's 44cm to 65cm when viewing
my LCD screen, and curiously different at 34cm to 74cm when viewing the
printed page. Is that normal?

I should just add that these distances are measured with my current reading
glasses with an add of +1.50. When I had an eye test 2 months ago the
difference from my previous prescriptions was too small to warrant a new
pair of specs. that's why I'm still using specs with a +1.50, I've had
these specs for 5 years now bye the way (my first pair of reading glasses),
and in all that time not enough change to warrant a new pair.

My optician has told me I still have pretty good vision for my age.

Any advice appreciated.
.

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