My 10 y.o. Poodle eyes have changed from a clear orange color to a cloudy opaque blue/gray? Should I be worried? Is she going blind or getting cataracts? Is this a symptom of old age in dogs?

Problems with the cornea of your dog can cause cloudy eyes. These problems can be infection/inflammation/ulceration of cornea, scratching of cornea, injury/trauma, in-rolling of eyelids etc. Chances of glaucoma are also high as your dog is aged. Treatment depends upon underlying cause. So, take your dog to vet for proper diagnosis and treatment. For details, visit this link.