Big wild cats have variation in eye colour. They have a visual field of view of 200 degree compared with 180 degree in humans.
And it's interesting that they struggle to see in still water,and will often disrupt the surface with their paws. Amazing how such a beautiful and bold eyes can be defaulted.
Furthermore, unlike humans, cats do not need to blink their eyes on regularly basis to keep it moistened.
All facts based on research!