Categories: cat eyes

Picture of cat with wide open pupils

This is a really nice picture of a cat, actually a cat with a big following on Twitter whose name is Curious Zelda, with wide open pupils because it was taken in low light conditions. You can click on it to see it in large format.

Picture of cat with wide open irises

There is often a confusion between pupils and irises. The iris is the sphincter muscle which is pigmented and which opens and closes the aperture (the pupil) through which light passes to the retina via the lens.

I like good pictures of cats and this is one of them. When the iris contracts and the aperture becomes smaller it goes from round, as you see in the photograph, to an oval shape and then finally a slit. The slit is important because it allows the cat to use her eyelids to half close over the slit to make the pupil even smaller. This is important because the cat’s eye is sensitive to light. We know this because cats see well in low light conditions. It becomes black-and-white vision but relatively good vision thanks to an abundance of rod cells in the retina.

If you click on this link you can see how domestic cats see. It is interesting to see the world through cats’ eyes.

Do cats see ultraviolet light?

The question in the title is probably meant to mean: do cats see objects under ultraviolet light only? For humans, ...
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Can cats see infrared light?

Cats cannot see infrared light because it is not part of the visible spectrum. In this way cats are identical ...
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Is this cat wearing eye makeup to make her eyes look more feline?

This is a strange picture of a cat. Her eyes have what appears to be makeup on the outside edges ...
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How many eyelids do cats have?

Domestic cats have three eyelids. I will explain where they are. There is one eyelid above the eye which comes ...
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Cat born without irises

Louie was born without irises and tear ducts. His congenital condition is called aniridia. The picture of him is startling ...
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See this cat’s pupils expand when in hunting mode

It's just a game. For the cat, the body gears up as if hunting. One of the changes is the ...
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The young, white cat with topaz eyes

Those eyes ❤❤Posted by Animals High on Friday, January 11, 2019 What percentage of white cats are deaf? In a ...
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Michael Broad

Hi, I am 70-years-of-age at 2019. For 14 years before I retired at 57, I worked as a solicitor in general law specialising in family law. Before that I worked in a number of different jobs including professional photography. I have a longstanding girlfriend, Michelle. We like to walk in Richmond Park which is near my home because I love nature and the landscape (as well as cats and all animals).

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