One Dog Eye Glowing and One White in a Flash Photo

Dogs' eyes glow in flash photos because of a reflective layer at the back of the eye (the tapetum lucidum), so the color you see is usually green, yellow or blue rather than red. The color can differ between the two eyes just from the camera angle, how wide each pupil is, or a small difference in the tapetum. So one eye looking different in a single photo is often normal.

A white glow or a white pupil that you can also see in normal light is different. In dogs this is most often a cataract, but it can also be other problems inside the eye. Childhood eye tumors that cause this in babies are very rare in dogs.

Take a few more flash photos from straight on. If the same eye still looks white, or if you see cloudiness, the dog bumps into things, or the eye looks red or sore, have your vet examine the eye.

See dog eye anatomy and cloudy eyes in dogs.

This is general information, not a diagnosis. Please follow your own vet's advice.