Eye and heart (6)
I believe the answer is:
centre
This clue is a double definition.
'eye' is the first definition.
(I know that eye can be written as centre)
'heart' is the second definition.
(I know that heart can be written as centre)
'and' acts as a link.
(Other definitions for centre that I've seen before include "'Things fall apart; the ... cannot hold' (Yeats)" , "Midpoint" , "Player" , "Place in the 18 down" , "Middle, core" .)