Using a slightly wrong glasses prescription?

[madbadger]

If I was to buy a pair of sunglasses with a prescription of -4.00L and -3.50R instead of my correct and recent prescription of -4.25 and -3.50, would it cause any problems? Or even be noticable?

Ta.

[BettySwollocks2]

madbadger said:

If I was to buy a pair of sunglasses with a prescription of -4.00L and -3.50R instead of my correct and recent prescription of -4.25 and -3.50, would it cause any problems? Or even be noticable?

Ta.

not sure, you may have headaches but then as its only a very tiny amount this isnt very likely. and as theyre sunglasses, its not as if you will be wearing them 34/7/365.

[madbadger]

They will primarily be for driving and cycling.

I suppose I could ask the optician, but I'm fairly sure they will advise to stick to the correct prescription, which is not available in the glasses I want.

[sinizter]

Slightly undercorrected - usually not much of an issue. A lot of of people basically have slightly uncorrected vision for ages before they get to the optician.

Ideally, it should be perfectly corrected. Main question is will it give sufficient driving vision ?

[madbadger]

That's what I was thinking.

I can read the bottom line on the chart with each eye individually in the eye test (with the correct lens) so gut feeling is it will be ok.

As I often ride with mud, mist and rain covering my glasses it may not be the biggest problem I have. I would however like some sunglasses that are not prone to falling off when sweating.

I'm looking at Oakley Jawbones with a spare set of persimmion lenses so they will be used in both bright sun and also stty weather.

I do have an old pair of Gascans that are the correct prescription, but they have a big scratch on one lens from when I fell off my bike and they came off. I suppose if the jawbones at -4.00 do not give me good enough vision for driving I could always revert to the old ones. They are fine for staying put while driving. However gut feeling is the 0.25 will not be a problem.

[AB]

BettySwollocks2 said:

its not as if you will be wearing them 34/7/365.

That's a given.

[sinizter]

Ah, 0.25. Missed that specific.

When I had glasses that were 0.25 undercorrected the optician told me I don't need to bother changing them unless I wanted to.

The error range within the prescription alone is 0.25.

[BettySwollocks2]

AB said:

BettySwollocks2 said:

its not as if you will be wearing them 34/7/365.

That's a given.

cant believe I wrote 34! D'oh, 24/7/365

[sinizter]

BettySwollocks2 said:

cant believe I wrote 34! D'oh, 24/7/365

That's also a given - Assuming he takes them off to sleep.

[madbadger]

I'm so cool I sleep in sunglasses.

I've ordered them anyway - so will see if they work.

[DKL]

I doubt you'll notice unless your R eye has better corrected vision than your left.