The Dogs Eye!

Why does it cost more money to have my dogs one eye looked at than both my eyes? $165 for a DOGGIE EYE SPECIALIST to  visually look and see if she has a cataract!! No instruments used!! What does that take, 5-10 minutes tops?  Local vet says, "Hey I see a cataract, but you should call this eye specialist." I called and was told $165 to look straight in my dogs face. Can't we pass the $165 visual inspection, because I know damn well there's a $400 test after that.  MOVE ON WITH IT!!