[OT] Varifocal glasses

[Capitol]

And they're not white on black!

[Andy Burns]

The trip computer on mine can switch to a mode that displays a 1" high digital speedo, quite useful regardless of any glasses problems.

With a bit of tweaking over the OBD II port, it can also be put into 'Driving School Mode' where you can select an even larger speedo in place of the radio display.

[Tim Watts]

Ironically, I'd probably get on better with bifocals - at least ones that had a soft but localised transition (so no hard line) - all I really wanted was a small reading area at the bottom and possibly centred - not half the lens!

[Tim Watts]

Because I'd look daft with upside down glasses!

[Tim Watts]

You can do that with a single fist but it may cause offence :)

[Tim Watts]

What make of car is that out of interest?

[Andy Burns]

Audi.

[dennis]

Don't be bloody stupid. You can move it up and down by millimetres and at that distance from the eye it equates to moving the transition up or down by tens of degrees. You can move it even more by changing the bend in the arms.

YMMV depending on the shape of your nose. In your case it must be vertical so the glasses fall off to prevent any adjustment.

[dennis]

I assume the lenses are not upside down as the distant object is still the one at the top. They are just varifocals with the transitions set very high. I have no idea why the glasses need to be upside down to do it.

I had trouble doing a ceiling rose, but I bought some clip on reading glasses from amazon to solve the problem. They flip up just like clip on sunglasses so you can see to get up and down the steps.

[Tim Watts]

I assumed they were not varifocals - it's Dennis Taylor - rememeber him?

[dennis]

I do now you have posted the picture, I don't remember seeing him cueing so I don't see why they would be better than normal specs.

[Cursitor Doom]

Mine's analogue and 30mph is "a quarter to." I never go any faster than that anyway (28mph everywhere to be precise).

[Tim Lamb]

I have one pair of bi-focals used for TV and control buttons. My distance vision is fine without aid but TV blurs slightly.

I had the hardest possible job to get the Specsavers Tech to mark the changeover low down so that I can watch comfortably reclined.

I tried using prescribed distance glasses for driving and found the loss of peripheral vision frightening.

>

[john james]

That is nothing in the tens of millimetres of the depth of the lens.

and at that distance from the

Degrees aren't relevant in this situation.

No you can not. The position of the transition zone vertically is entirely determined by where the nose pads sit on the nose.

No one's nose is anything like vertical.

[dennis]

Then why move your head up and down to focus on things?

And the distance between the pads and the shape of the nose. A hint as you seem a bit slow.. your nose is thinner at the top so making the gap between the pads wider will drop the lens down, making the gap narrower will move it up.

Bending the arm to make it longer moves the pads towards the front and hence lower.

If you can't understand something so simple you must be harry or rod speed.

[Chris French]

I've been wearing VF for about 4-5 years now - on second pair, I have no issues with peripheral vision. Might be down to my eyes/prescription, might be down to the lenses.

The more basic/cheaper lenses tend to be worse in this respect. I had the 'tailor-made' ones from Specsavers first time round, last time I went for the mid range cheaper option which seem to be just as good really.

I wouldn't be without them though now, I wear them all the time and never really think about it.

For very close/fine work I take them off, but I would have. taken my old single vision glasses of anyway. For reading in a chair etc. I wear them, in bed where I tend to have the book (or more likely Kindle) nearer I usually take them off as I read ok anyway at that distance

[Chris French]

In message , tim..... writes

Specsavers have a 'Satisfaction Guarantee' - basically if you find the glasses don't work for you they will sort out an alternative (this applies to all their glasses).

I know someone who got VF and they didn't get on with them and went back and got different glasses

[Chris French]

In message , Tim Streater writes

Yeah, I rather associate swapping glasses with getting old anyway.

I couldn't be putting up with the faff of different pairs of glasses, They would just end up in the wrong place etc. etc. And why would I want to bother swapping pairs when one pair does the job better (for me)

I put off getting them for a few years (cost mostly), life got better once I got them.

[Chris French]

Because it avoids the problem of you peering over the top of your specs and everything being blurry

[dennis]

I thought that, but I don't have upside down glasses and can see through the lenses all the way up to where my eyebrows block the view. It shows that people have different shaped faces and need different solutions.