What he says ! Been doing this for years. Last pair Raybans, £225 online over £500 in the high street.Go to the Opticians. Get your prescription ( They have to give you it by law ) Then go online and there are lots of companies that will make your glasses at a fraction of the price of your local Opticians and will make lenses to suit your frames no problem.
They all give instructions for measuring. Been a question of Mrs Saint and a ruler !!!What I’ve always wondered about online lenses is how accurate are they in terms of where the frames sit on your face? What I’m getting at is that the optician measures your eyes against the frame to ensure that the lens grinding accounts for the distance between pupils and where the frames sit on your face. How can this be achieved online?
I worked as an optician and lab technician for years, and I can tell you that there is a mathematical formula for calculating the pupillary distance (PD), which is the distance between your pupils, and the fitting height -- centre of pupil to lens. We used to do this manually, but when the computer knocks out the cuts for grinding the lens, it accounts for the PD and fitting height as well. Nothing wo worry about.What I’ve always wondered about online lenses is how accurate are they in terms of where the frames sit on your face? What I’m getting at is that the optician measures your eyes against the frame to ensure that the lens grinding accounts for the distance between pupils and where the frames sit on your face. How can this be achieved online?
OK, that‘s reassuring. So, if I have it right, one simple measurement of the distance between pupils is all that’s needed - the computer then adjusts for frame/lens size and shape.I worked as an optician and lab technician for years, and I can tell you that there is a mathematical formula for calculating the pupillary distance (PD), which is the distance between your pupils, and the fitting height -- centre of pupil to lens. We used to do this manually, but when the computer knocks out the cuts for grinding the lens, it accounts for the PD and fitting height as well. Nothing wo worry about.
Isopropanol alchahol and a twist loop microfiber. Then use a second microfiber as a buffing towel to remove any smears. Works for cleaning the car windows so give it a go my friend. Many respects. J.After getting fed up with dirty lenses, trying cleaning sprays and different cloths I decided to try a Chamois Leather. Did a search and found one that looked the thinnest. Do t know if it’s wearing a face mask all day at work or what, but my glasses seem to get dirty so quickly these days.
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So far so good ! Works very well, but I’ll let the trial continue !
Yeah tried that, think this pair have lost their scratch coating too. New ones in July when I have my eye test. Just a thought does Alcohol remove coatings over a period of time ?Isopropanol alchahol and a twist loop microfiber. Then use a second microfiber as a buffing towel to remove any smears. Works for cleaning the car windows so give it a go my friend. Many respects. J.