Due to an increase in patients either not showing up, OR Rescheduling, at their appointment times,
Our office has had to implement a Fee of $25 if appointments are changed with less than 24 hours’ notice.

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Colorblindness Questions

Our most frequently asked questions about colorblindness.

How do common forms of colorblindness affect the number of distinguishable colors?

As a person with a red-green color defect, it’s a big pain. As I have said in previous answers on the topic, I don’t even know what red and green look like. i only know what they look like to me. And based on vivid blue and yellow are to me, I think I am missing out on a lot of beauty. Some reds and greens look “very” red and green to me (the way I see them anyway), but others are just odd. especially when the colors are mixed with other colors (as in, oh, there’s green mixed with that yellow??) Overall, I would say red and green just look more dull. like something that has seen many cycles in the washing machine. I think the best way I can explain my dilemma is that violet, which is a combo of red and blue, looks mostly blue to me. and usually a dark blue. Lying the colors side by side, I can often tell the difference, but not always. And on the color vision tests, I can generally only get about the first two; after that, I’m screwed. About 7 percent of males suffer this problem, but only .7 percent of females do, so it is 100x more common in males. As a side note, do not invest in tinted glasses that “fix” color vision. They do not work.

Are individuals with color blindness eligible to join the military if they are interested in working with electronics?

Electronics is a very broad area. I took “electronics’ in high school (1977), where it meant knowing about power, resistance, capacitors, etc. I also attempted a few DIY car stereos back when AM was all that was available out of one horribly sounding speaker in the middle of the dash. In both of those instances, I had a horrible time distinguishing the colors on the bands of resistors and the colored wires of the car stereos, especially when you’re under the dash with poor lighting. browns and reds, reds and greens, reds and gray, gray and green – hoo-boy, what’s a deutan to do? Now, if you are working in other areas of ‘electronics’ that may not be as bad, but consider even computer screen colors or meters that use colors to depict a certain function. I would certainly think twice about this choice. Again, there may be areas that are less color dependent. My color deficient bro is a pharmacist, and I am an eye doctor – we do pretty well, despite the unlikelihood of us choosing those professions! Good luck and don’t give up! But also do not think that a special tint on glasses or contact lenses will fix you, because it will not.

Are glasses for color blindness effective?

Short answer: no. There are many degrees of color vision deficiency. As an optometrist who has tried the glasses, they did me no good whatsoever (I have a red-green color defect). Save your money

Is it possible for two people to have the same type of colour blindness and see colours differently?

Yes, it is. Color perception is very subjective, even in people who have no color vision defects. Some people are called ‘poor discriminators, ’ which simply means they have difficulty with subtle changes in colors. People who have color vision defects don’t all see the same. Like nearly all disorders, there are orders of magnitude where some may be much for deficient than others. And others may have developed memory techniques or learned to discriminate more efficiently based on shading or brightness, etc. My brother and I both have red-green issues, and I feel we probably see mostly the same.

How do glasses correct color blindness?

They really do not correct color vision. I have a red-green color defect. I was barely able to see one additional figure on a color vision test. And that’s the bottom line. No matter what a person “sees” when they try them on, if test scores don’t improve, they aren’t correcting anything. And as far as my perception, I’ve never seen true red or green the way others see it. How would I know if what I saw was what others see?

Is it possible to surgically gain cones in your eye to see more colors, sort of like how we use Lasix to gain better eyesight?

No. LASIK vision removes layers of the cornea (your front lens where a contact lens would sit) by using a laser. Think of it as high-tech and highly accurate “sanding” of a steep curve to make it less steep. LASIK does not make your vision better; it corrects the power needed for you to see normally without glasses or contacts. It does not give you “super vision”.
Your detail and color vision cells are located at the inside back surface of the eye, called the retina. Think of it as the film in a camera (back when cameras had film!) 😉 There are about 7 million cones at the macula where detail and color are processed. This area is about .3 millimeters in size. That’s not much different in size than the period in this sentence. It would be impossible at this point in time to surgically implant cones. Even if it were possible, you need to “hook them up” to the pathway of cells that lead to the optic nerve. The retina is ten layers thick and is about as thick as a sheet of aluminum foil. It’s physics. It’s just not possible (yet).

I’m colorblind. Why can I see some shades of red and green and others not?

There are 50 shades of red and green…. Maybe not, but it sounded good. There are many degrees of color deficiency. The trick is when you have a color issue, how do you know what is what because you have no normal to compare to. And to be honest, those of us with color problems are super frustrated with those marginal colors like “is that blue or purple ?” “Well, it’s sort of a bluish aqua with a little red mixed in. “.