My symptoms were the gradual inability of corrective lenses - either glasses or contact lenses - to fully correct my vision. Starting a few years back, it became impossible to get a prescription lens to sharpen things up, to get rid of ghost images or double vision, and to "cut through" the fog that I could now begin to tell was really there all the time.
The double-vision thing can also be caused by astigmatism, not necessarily by cataracts. But cataracts will greatly exaggerate the effects of even a tiny bit of astigmatism, which was happening to me. I had thought I might need the "upgrade" to the lens that also corrects for astigmatism. She said no, you'll be amazed, but you only need the basic. And I was indeed.
Anyhoo, if it's not cataracts, then maybe BK is ready for some plain old glasses, or something like vixmom's.