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Euro Coins Test for Color Blindness
Chris writes "Three-hundred million Europeans now have an easy way to check whether or not they suffer from red-green color blindness according to optics.org. Spanish researchers are suggesting that the new Euro coins, introduced in January of this year across most of Europe, could be used as an instant test for red-green color blindness. Color blindness sufferers confuse reds, yellows and greens. Traditional tests to detect deficiency in color vision are difficult to evaluate or calibrate. But in trials comparing 5 cent coins, which have a reddish tone, with 10 and 20 cent coins, which have a yellowish tone, color-blind observers were incapable of separating them while normal observers achieved the operation in seconds."
You'd think whoever was charged with designing a new coinage would have been tasked with making sure they are easily distinguishable by all, including older people with bad vision, the color blind, etc...
11*43+456^2
It's lucky they're different sizes then. It would be really annoying living somewhere where the money was the same size and colour!
Complete BS. There are books of standard tests that look for not only the common red-green color blindness, but also several other less common forms. Here's a cool online version.
Software sucks. Open Source sucks less.
t.
From the article:
The point is that the vast majority of the population will never get in to have an opthalmologist evaluate their color vision, but now anyone can perform their own screening with a little pocket change.
Since one of the causes of R/G anomolies is undiagnosed Multiple Sclerosis, this is A Good Thing.
This seems pretty typical, ignoring the color issue for the momment, you want to be able to put your hand in your pocket looking for a dime and find a dime without pulling out all the coins and sorting. Dimes aren't the easiest to sort from pennies, or at least I get pennies as often as dimes but atleast I can feel and tell that I only have quarters or nickels. So the same size was a poor start. The color comparison is OK only if the coins are new and the user isn't color blind, what are these coins going to look like in 5 years, there is a huge variation between a new shiny penny and a 6 month old one and then as they get older they get very dark, the change in the life of a penny is 10 time the difference shown between the 20 and 50 coins shown in the photo. The idiot that did this should be fired, from a very large cannon, the color of the cannon shouldn't matter ;^).
Actually, this type of thing also happened a few years ago in Canada, with the $2 coin. It had an inner, gold coloured part and an outer, silver coloured part. Coins from the first press could have the middle part punched out fairly easily (without needing to put them in the freezer). You can (and I know someone who does) wear the outer part on a chain around your neck, as a souvenir of the Canadian Mint's ineptitude.
I tried taking the two coins to my hand, shaking them around a bit and then putting them on a table. As soon as I pull my hand from over the coins, I can tell which is the 5 cent one and which is the 10 cent one. I tried this in a few different lighting conditions but the result is always the same.
The spanish euro coins shouldn't be different from finnish ones, so either I was misdiagnosed or the research is inaccurate. As the plates by Dr. Ishihara are supposed to be a very reliable test, I can't place much credibility on the results of the abovementioned research.
Sweden's notes are distinguishable by size, aspect ratio, and color.
For nice to look at money, Finland's now defunct Markka was a good example.
Great for blind, color blind or the disoriented, drunk tourist. The EU money clearly suffers from designed by committee syndrome. The committee should look more closely at the good examples when they have to redo the design of the money.
Beta is broken and the link to classic doesn't work. Stop wasting our time or there won't be anybody left here.