Author: chromaphobe

  • Limits of the Visible Spectrum

    Limits of the Visible Spectrum

    Transcript + Footnotes The cosmos is a bright disco of light of every scale… a huge spectrum of electromagnetic radiation, and our pathetic little human eyeballs… can see less than 1% of it. Today on chromaphobe… Why can’t we see in the infrared or the ultraviolet? How come we can only see in the visible…

  • Can LSD help color blindness?

    Can LSD help color blindness?

    References Transcript + Footnotes Psychedelics can make you “see” pretty colors, but what are they ACTUALLY doing for your color vision? Today on Chromaphobe… can hallucinogens, psychedelics, LSD, shrooms… improve your color vision or help your colorblindness? ANECDOTES There are plenty of observations that seem to suggest this, and it’s not just your stoner roommate,…

  • 7 Ways to Cheat the Ishihara

    7 Ways to Cheat the Ishihara

    References The essay by Elsie Murray is a very interesting, short read. Transcript It can suck to be colorblind, and especially to have a clump of ugly little dots laugh at you as you realize that you will never be able to… uh, drive a train. This little Ishihara plate is often what keeps us…

  • Why do Protan & Deutan look so similar?

    Why do Protan & Deutan look so similar?

    Transcript Say hello to this pretty lady. You know what makes her prettier? Being color blind. Let’s use her to simulate some colorblindness real quick. As you probably know, since, well, you clicked on the thumbnail, there are three main types of partial colorblindness: protan, deutan and tritan. These are the forms that affect the…

  • Wiki on Color Blind Glasses

    In addition to starting my MSc last month, I’ve also been spending some time cleaning up the terrible state of color vision articles on Wikipedia. Today I published a new article, which until now was just a few lines on the colorblindness article and in the EnChroma article. Color blind glasses (color correcting glasses) now…

  • A Cure for the Colorblind: Roadmap to Gene Therapy

    A Cure for the Colorblind: Roadmap to Gene Therapy

    FOOTNOTES #1 Heredity Because the gene therapy only targets the photoreceptors, and only affects cells in the retina (and possibly other areas of the eye), the genomes of the gametes (eggs and sperm) are unaffected. This means that the new copy of the gene is not inherited by the children of the individual who received…

  • First human cured of colorblindness!?

    A paper was published at the end of August in the journal BRAIN that shows possibly that the first case of colorblindness has been cured. This comes after 13 years of apparent stagnation in gene therapy for CVD, ever since the Neitz Lab cured dichromacy in 2 squirrel monkeys in 2009. The study involves 4…

  • Can cops be colorblind?

    Can cops be colorblind?

    TRANSCRIPT One thing we can probably agree on, is that police should be more colorblind… but while you may be thinking colorblind in the figurative sense – less racist cops – I mean colorblind… in the literal sense… because in the majority of police forces around the world, the colorblind are restricted from becoming police…

  • The Science Behind the Ishihara Test

    The Science Behind the Ishihara Test

    Footnotes FOOTNOTE 1: CONE MOSAIC (5:07) The small changes in luminosity curve are often due to differences in the cone mosaic. The retina is made up of the four photoreceptors (3 cones and 1 rod), but these proportions change from person to person. Some people have more red cones and some more green cones, and…

  • My least favourite traffic sign

    Another short up this week. There is a traffic sign that means “give way to oncoming traffic” often seen on single-lane bridges that in europe looks similar to the sign pictured below. Since protans perceive red as darker, in many conditions, this sign can appear all black and therefore potentially be confused with a sign…