Yes that is how they work
Once you lift your visor you wont be able to see lol
I use a + 2 in mine
Thanks for mentioning astigmatism, i have it in my left eye, any advice on the use of cheaters or other means would be appreciated,ArtherI use a 2.5 Dave and I find that it helps enormously. I have to wear my glasses as I have an astigmatism in my remaining eye (other one removed) and otherwise everything would be barrel shaped.
When I bought my new helmet I bought a range of cheater lens but have yet to experiment which is best. Following the desired welding line is very much better with the 2.5 . My old helmet had no provision for them so the lens had to be fixed with strips of double sided tape that kept coming unglued whereas the new one has clips. Much better but rather tight.
Stigmatism effects distance vision? Cheaters only magnify as short ranges just like readersThanks for mentioning astigmatism, i have it in my left eye, any advice on the use of cheaters or other means would be appreciated,Arther
Cheaters are judt magnify. No thenAstigmatism affects vision at all distances. It is caused by an asymmetric lens in the eye.
"Astigmatism is a common condition that can result in blurred or distorted vision at all distances, varying with the strength of the astigmatism. It occurs when the cornea or lens is not a perfectly curved shape. It is also a more common condition than you may think. In the UK, 47% of people who wear glasses have astigmatism to some degree."