Just wondering with fake brand name sun glasses do they offer proper protection?
Was in the Greek Islands and scored a pair of Ray Bans for a couple of Euros. Is there anyway of testing if they actually protect your eyes or are they just tinted glass?
Uv 400 is basic sun protection I gather like for casual wear or driving?
https://wiki.cancer.org.au/policy/Position_statement_-_Eye_p…
Sunglasses may also be labelled UV 400 (blocking 100% of UV), or state the amount of UV radiation blocked as a percentage.
If they cut down the glare rather than just dulling your vista they are probably excluding some ultra violet rays.
Good test is a body of water between you and the sun.
What do you mean by body of water? Took them to Specsavers and they said they had no way of testing the lens
I think difference in glare is only really noticeable between polarised vs non-polarised lenses.
Slip on the glasses and Just stare at information display screens at any train station.If you can read them then they are non-polarised, else they are polarised.
Depends on the angle . One way they will be perfect, the other will be blocked.
Had a doh moment at a station like that, wondered why the screen was blank until I looked over the top of my sunnies.
Unlikely
You'd be surprised.
Google 'UV transmission' with your material of choice (glass, acrylic, polycarbonate etc).
UV spectrum covers 400nm (UVA) to 200nm (UVC); glass is a bit ordinary for UVA but plastics will block almost all UV, letting in a bit of UVA close to the visible spectrum. Meh.
As far as UV transmission goes, there's not much difference with sunglasses.
It's hard to find glass or plastic that will pass UV.
The enthusiastic can buy something like this: https://www.aliexpress.com/item/Solar-Film-Transmission-Mete…
Shine a UV torch through them or use a UV sensor with the sun shining through them should give you a rough idea.
It it cannot be tested I wouldn't risk my precious eyesight with it. Just use your Bondis 😎
Does a fake condom offer proper protection?
I only wear genuine Serengeti sunglasses from a reliable source. Not risking sun damage to my eyes. I’ve often wondered what people do with their kids. Would’ve thought is was even more important for the kids to have good quality glasses.
Lack of sunlight exposure for eyes is the primary cause of shortsightedness and, by extension, exposes them to a higher risk of other eye related problems later in life. Seems you can't win either way.
Nevertheless I no longer wear sunglasses if I can help it. I don't think it's necessary unless you work outdoors anyway.
Check to see if the maker is a member of the Fake Products Association. They may adhere to the Code Of Conduct covering eye protection.
Fake Ray Bans means fake protection.
But not fake coolness.
There was a youtube vid a while ago of a cyclist in Melbourne who compared fake vs real Oakley Radars. The optometrist did the test and the fake was as good as the real for UV.
I'd say some but not all fakes can be relied upon. You cannot tell without the test, don't even rely on price as a guide either.
Unlike Australia, I dont believe there are strict laws in Greece regarding sunglass and UV protection.
Unless they now come under the European standards in which case they should carry the CE mark.
A UV400 sticker may mean nothing if they are illegally imported.
Anyway, what do you expect for a couple of Euros?
Put them on and compare with a good pair of sunnies.
If you eyes feel strained after a couple of hours you know not to wear them.
Otherwise if they look good on you, then wear them.
After all many people wear them as a fashion accessory
….speaking of UV, does artificial UV count? For example LED strips or fittings?
uv 400