#trichromat

[nostalgia-eh52]

[fredgalle]

Count the #colors in this box how many do you see? Only 1 in 4 can see every color! >20 #dichromat 20-32 #trichromat 32-39 #tetrachromat more your a .....#nut 😉😂

[thebaethan-blog]

Are you a dichromat, trichromat or tetrachomat? No idea what we’re talking about? Professor Diana Derval’s work on how the human eye determines colours - count how many colours you can see in the spectrum above, then check out this article to find out what you are! I got 39, what about you?

[badconcept]

possibilities for human to perceive ultraviolet spectrum

Tetrachromacy & Trichromat

Human can not perceive UV light directly because the lens of the eye blocks most light in wave length range of 300nm~400nm. (shorter wavelengths are blocked by cornea)

Nevertheless, the photoreceptor of the retina are sensitive near UV light and people lacking a lens (Aphasia)

Human eyes perceive UV light as whitish-blue or whitish-violet, probably because all their types of cones are roughly equally sensitive to UV light, but blue cone a bit more.

People with four photopigment have increased chromatic discrimination.

Therefore, some of us may be able to perceive ultraviolet spectrum due to gene or lens removal, it would be very unlikely to produce a glasses that could perceive ultraviolet spectrum.

[jamiedole]

An unknown number of women may perceive 
millions of colors invisible to the rest of us. One British scientist is trying to track them down and understand their extraordinary power of sight.