$5000 for the surgery. For humans there is a machine that does it (Lasic) but not for dogs, it’s still done the old fashioned way . My setter Triple had cataracts in both eyes and I got one eye done. She ran hard and she only lasted a couple more years , until 9.

There is a good canine eye surgeon in Kansas City

It is quite possible that the nucear sclerosis/cataract is not the actual primary cause of deterioration in his visual acuity. Better get a vet. ophthalmologist to examine the dog. Might be retinal problems/glaucoma,etc.