Nuclear Cataract Does My Miniature Schnauzer Have Nuclear Sclerosis Or Cataracts?

Does my miniature schnauzer have nuclear sclerosis or cataracts? - nuclear cataract

He is 10, and his eyes began to clarify. I read that nuclear sclerosis, which can be treated and does not cause blindness, is often confused with cataracts, which can be treated and does not cause blindness. Apart from him (the vet and me), how can I tell if he has nuclear sclerosis or cataracts?