Optical illusions have long fascinated people for their ability to trick the brain and challenge our perception of reality.

there is swelling around their eyes, or the cat is squinting, it is likely there is an underlying eye issue," says Dr. Spragley. "Cats can have excessive eye boogers from upper respiratory ...

A cat’s cornea, the dome-shaped surface that covers the front of the eye, can become inflamed, injured, or ulcerated. The result may be cloudiness, lots of blinking and/or squinting ...

Weepy Eye. You may see some discharge from your cat's eye. Painful eye. Your cat may squint, close its eye, or rub the affected eye. Your cat may also behave as if they have vision problems.