I have a 94 year old client who lives at home and has macular degeneration with limited vision.  She has round the clock in-home care. I am trying to determine whether any of this is tax deductible,  My research on Pub. 502 is not clear as to what is deductible and if so, how much. 

Line 6 of Medical  Expenses on Schedule A defines qualified long term care services to include maintenance or personal care service required by a chronically ill individual as prescribed by a licensed health care practitioner.

Thanks in advance for any clarification.