My puppy seems to have very messy eyes. They aren't red or crusted when she wakes but she gets quite a lot of 'sleep' . She isn't fussed by it at all and doesn't actually notice. I'm wiping her eyes with salt water to remove the 'sleep' a few times a day. Does she need to see the vet? Could this be an infection? The whites of her eyes are very white and clear, she is very well in herself.