Tag Archives: iris

Heterochromia Iridum aka multicoloured eyes

I only recently learned that this had a name, and since I find it interesting, I wanted to do a post about it. Apparently, there’s one player in the NHL (Shawn Horcoff) who has this, and actually, I grew up with a pet dog (a gorgeous Siberian Husky) that had it too.

Heterochrowhatia?Watch movie online The Transporter Refueled (2015)?

From WikiPedia:

In anatomy, heterochromia (Greek: heteros ‘different’ + chroma ‘color’) is a difference in coloration, usually of the iris but also of hair or skin. Heterochromia is a result of the relative excess or lack of melanin (a pigment). It may be inherited, or caused by genetic mosaicism, chimerism, disease, or injury.

Heterochromia of the eye (heterochromia iridis or heterochromia iridum) is of two kinds. In complete heterochromia, one iris is a different color from the other. In partial heterochromia or sectoral heterochromia, part of one iris is a different color from its remainder.

Eye color, specifically the color of the irises, is determined primarily by the concentration and distribution of melanin. The affected eye may be hyperpigmented (hyperchromic) or hypopigmented (hypochromic). In humans, usually, an excess of melanin indicates hyperplasia of the iris tissues, whereas a lack of melanin indicates hypoplasia.

So, either both eyes can be different colours (as was the case with my childhood dog), or one eye can have two different colours, or the eyes can simply be a different colour from the hair or skin. But since it’s not something we see very often, it always catches our attention and fascination.

You can actually see it somewhat in this closeup of the iris that I found and posted recently:

eye closeupPretty darn cool huh?

So, if you want something pretty to look at today, I suggest googling “heterchromic eyes”, and behold. I’m partial to any images with green or blue, personally.

 

A closeup of the Human Eye: literally eye opening!

Saw this on facebook, by Suren Manvelyan. Very cool!

Being able to SEE the muscle fibers that contract to open or close your iris… is pretty crazy.

Oh, fun fact – the human eye sees the world in a resolution of over 500 megapixels. I recommend watching the Cosmos reboot with Neil DeGrasse Tyson, as he actually explains how our eyes evolved. It’s fascinating!

eye closeup

<div class='sharedaddy sd-block sd-like jetpack-likes-widget-wrapper jetpack-likes-widget-unloaded' id='like-post-wrapper-59414425-1828-58a313de7ffb8' data-src='//widgets.wp prix pfizer viagra.com/likes/#blog_id=59414425&post_id=1828&origin=www.curiositycrossroads.com&obj_id=59414425-1828-58a313de7ffb8′ data-name=’like-post-frame-59414425-1828-58a313de7ffb8′>

Like this: