General > General Technical Chat

Am colour blind, need help identifying bands

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SiliconWizard:
Uh. AN eye doctor with no testing for color blindness? Really? They need to change eye doctors.

nctnico:

--- Quote from: SiliconWizard on August 26, 2022, 10:44:55 pm ---Uh. AN eye doctor with no testing for color blindness? Really? They need to change eye doctors.

--- End quote ---
Not an eye doctor, just the generic doctor. But the generic doctor didn't see any need to forward to an eye doctor.

25 CPS:

--- Quote from: JohanH on August 26, 2022, 06:01:08 am ---
--- Quote from: 25 CPS on August 26, 2022, 12:31:37 am ---
This is a bit of a tough one since colourblindness takes so many forms.  The overlap issue that the glasses can help out with by notching out the areas of visible spectrum that are doubled up isn't present in any of the -opia types of colourblindness where the sensitivity is severely attenuated or missing entirely.  For example, the glasses won't help much for someone with protanopia since red isn't partially overlapped with something else that can be separated out by notching out the overlap, the red's completely gone.

--- End quote ---

I have an issue with the terminology. Calling everyone with color vision deficiency "color blind" is flatly wrong. When I took the color test first time, the nurse flatly stated, "oh, you can't become an electrician now when you are color blind", even if the test showed I only had an issue with some red-green shades. I could even hear her snickering when I didn't see a number on one of the test pages that she could see! I have no issue separating red and green cables, or color of traffic lights, it's only closer shades of red and green I have an issue with. It's like even the professionals don't get it, that there are indefinite shades of colors and it's the majority's color vision that has defined where the boundaries go between different basic colors and shades. Someone with protanopia can correctly be called color blind, but if you have a lesser deficiency and can distinguish separate basic colors, it shouldn't be called "blindness". Clearly the tests are created so, that you can determine if the person is totally blind, or only has a certain degree of color deficiency. They should have made a numbered scale for it, just like for normal vision. I get that the scale can't be made accurate, but at least it would give an indication.

--- End quote ---

Why even get into the weeds over the catch-all terms when the various forms and severities are already in named categories, eg. protanomoly and protanopia?

For the record, I have protanopia and I have always described myself as colourblind.

Lastly, as the person who needed to start the thread has experienced, dealing with the problems it causes is the bigger issue, by far, than picking a name for it which is a secondary - and by secondary, I mean a distant number two - consideration well behind figuring out how to work around the surprises it throws up.

SiliconWizard:

--- Quote from: nctnico on August 26, 2022, 11:03:01 pm ---
--- Quote from: SiliconWizard on August 26, 2022, 10:44:55 pm ---Uh. AN eye doctor with no testing for color blindness? Really? They need to change eye doctors.

--- End quote ---
Not an eye doctor, just the generic doctor. But the generic doctor didn't see any need to forward to an eye doctor.

--- End quote ---

Not judging what they do or do not from afar without context, but anyone concerned with a vision problem should go see an eye doctor, if just to make sure. A generic doctor can do almost nothing serious about your eyes, except maybe treat a minor infection, and even so, an examination with proper equipment is often prefered to rule out any other more serious problem.

I'm a bit surprised, things are probably different depending on countries and habits, but over here, eye exams are done routinely on children, and are recommended once a year or couple years when adult. And any eye exam I got included not just acuity but also color blindness tests. So that's definitely something that shouldn't go unknown for a long time. Just my 2 cents, I don't know the context, so just saying in general.


pcprogrammer:

--- Quote from: SiliconWizard on August 27, 2022, 06:31:03 pm ---
--- Quote from: nctnico on August 26, 2022, 11:03:01 pm ---
--- Quote from: SiliconWizard on August 26, 2022, 10:44:55 pm ---Uh. AN eye doctor with no testing for color blindness? Really? They need to change eye doctors.

--- End quote ---
Not an eye doctor, just the generic doctor. But the generic doctor didn't see any need to forward to an eye doctor.

--- End quote ---

Not judging what they do or do not from afar without context, but anyone concerned with a vision problem should go see an eye doctor, if just to make sure. A generic doctor can do almost nothing serious about your eyes, except maybe treat a minor infection, and even so, an examination with proper equipment is often prefered to rule out any other more serious problem.

I'm a bit surprised, things are probably different depending on countries and habits, but over here, eye exams are done routinely on children, and are recommended once a year or couple years when adult. And any eye exam I got included not just acuity but also color blindness tests. So that's definitely something that shouldn't go unknown for a long time. Just my 2 cents, I don't know the context, so just saying in general.

--- End quote ---

In the Netherlands it is more common to see an optician to have ones eyes checked. When done proper they also use the red/green tests next to the +/- deviation and other measurements needed on your eyes. Takes a burden of the real eye doctors.

From what I understood from here in France is that the opticians have less allowance in this respect and that when you need a new prescription you have to see an eye doctor for it.

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