Dementia and Vision

We know that Lyn's vision is not as good as it once was.  I previously attributed that to her age and the normal progression of vision in our family.  Most of us have to get reading glasses in our 40's.  However, I have learned that dementia also impacts vision.  In all honestly, I shouldn't have been surprised by this but I was because I just hadn't thought about it previously.  I'll let dementia educator Teepa Snow explain.