Reading Sunglasses

I bought a good pair of sunglasses with no UV protection reading at a optic store. I was wondering if that means it has no UV filter?

And should I continue to wear sunglasses even if they don't have UV filter? Will that damage my eyes?

yes beacause the glasses will incrase the power of uv light

2008-06-30 11:47:04 by jump into answering

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I've seen many people buy them from places like discount department stores and $2 shops. I heard people saying things like they can damage your eyes.

How is that possible? Are the lenses on them dodgy? Just curious!

If they don't do damage or any harm, then why are the ones people order from their optometrists so expensive?

Sunglasses would not damage your eyes, but they may not offer the same protection as a better pair. They will usually have a sticker on them to tell you that they are UVA and UVB protected. I think most of them are, even the five dollar ones. The problem with them is they are cheap and break easily.

If you are referring to prescription eyeglasses made at a discount store optical department, they are held to the same standard as every other high-end optical shop in the country.

The reading glasses off the shelf are for people with presbyopia, usually older people who only wear them to read. If you wear glasses for distance, the odds of your prescription being available off the shelf is probably about one in a million. They would definitely give you a headache, but I don't know about long term wear. I don't think you could tolerate them long enough to damage your eyes.

2008-04-29 23:09:58 by Dan

Price: $19.99 $10.99

Bifocal is regular on top and reader on bottom
Stylish and functional
Price is for one (1) pair of glasses

Do you love reading outside, but do not like choosing between sunglasses and reading glasses? How about using both at the same time!

use the ones that darken in the sun, and lighten indoors. they call them photo-something or another.

2009-07-29 01:24:20 by Anas

Price: $35.00 $12.99

Worn By Movie Stars and the Rich And Famous
When You Buy Them and Don't Like Them?....No Problem....
UV Protection and Optical Quality

Best answer gets 10. Thanks!!

Sunglasses will be warmer due to the dark colored lenses. Dark objects will always absorb more energy.

2008-02-28 18:23:16 by NG2009

Which pair would you expect to be warmer, and why?

The sunglasses absorb light and heat while the reading glasses absorb none or very little. So the sunglasses are warmer.
Yes, they're both at thermal equilibrium, but the equilibrium temperature for the sunglasses is higher. Both at thermal equilibrium doesn't mean equal temperatures; it means that for each, heat in = heat out. When heat in increases, equilibrium requires a larger temperature difference between the glasses and the surroundings to increase heat out.

2009-03-21 11:30:27 by fdgdg