Vision and sound engineer (6)
I believe the answer is:
eyeful
'vision' is the definition.
(thesaurus)
'sound engineer' is the wordplay.
'sound' indicates a 'sounds like' (homophone) clue.
'engineer' becomes 'eiffel' (I've seen this before).
'eiffel' is a homophone of 'EYEFUL'.
'and' is the link.
(Other definitions for eyeful that I've seen before include "Gorgeous sight" , "As much as can be taken in by a look" , "great sight" , "Does a pupil contribute to this" , "Something worth looking at" .)