The video explains the reason. Is it the correct one!? Bagel is an extremely laid-back cat. You wonder why. I think it is because she was raised from a young kitten by the woman narrates the video. Well, that may be part of the reason. But she accepts the sunglasses without complaint it seems.  Bagel. Screenshot. And the reason she wears them is to keep dust out of her eyes because she has no eyelids. This means she does not blink and blinking removes dust and grim from the eye's cornea. The don't have to be sunglasses. Some sort of goggles might have been more effective but not as attractive. I sense that Bagel's owner has used her cat's eye condition to turn her cat and herself into a celebrity. Cynical? The motivation is usually a desire by the cat's owner for celebrity. There is a lot of it about. A deep yearning for celebrity status thanks to social media. It was not always like this believe me.   Cat eyelid agenesis Cat eyelid agenesis, also known as feline e...

Domestic cats have slitted eyes, also known as "vertical pupils," for a very specific reason: to help them hunt prey. Image: MikeB The vertical shape of their pupils allows cats to control the amount of light entering their eyes, which is essential for hunting at dawn and dusk when light levels are low. The pupils can dilate to let in more light or constrict to reduce the amount of light entering their eyes, depending on the situation. The slit shape also helps cats to focus on their prey, as it provides them with a greater depth of field than a round pupil would. This allows them to judge distances accurately and pounce on their prey with precision. In addition, the vertical pupils may also help protect the cat's eyes from damage. By closing to a very narrow slit in bright light, the pupil reduces the amount of harmful UV radiation that enters the eye. It achieves this by working in conjunction with the eyelids which pass down over the slit like a blind at a window. A ca...