No, but they are reflective.
No. Eyes are not luminous. They observe or perceive light but they do not emit light. Luminous means "emit light." There are various species of animals, such as deer, cats, and dogs, whose eyes have the ability to reflect light which sometimes make them appear to glow in the dark as they reflect a flashlight, headlight, or other light that is shining in their direction. But even then, the eyes do not produce their own light so they are not luminous.
The cat's luminous green eyes shone in the dark night.
because there is no light reflecting off of the non-luminous object into your eyes to let you see it.
Because there's no light reflecting at the cat's eyes.
a luminous light brown color
Yes, dogs have two eyes.
Yes, dogs sleep with their eyes closed.
Dry eyes in dogs can be given the drug Cyclosporin.
Normally, yes, they do have eyes.
They glow in the dark because luminous things have a quality that makes them glow. For instance, a firefly is luminous.
We can see non-luminous objects because the light reflect off the object and into our eyes that's why at night you can only see a faint out line of the objects around you
Pls read "The Influence of Low-powered Family LED Lighting on Eyes in Mice Experimental Model" in life science journal and you will know most of them will damage eyes. Not depend on luminous intensity.