Clout is misplaced in viewing authority? (7)
I believe the answer is:
oculist
'viewing authority?' is the definition.
(eye specialist)
'clout is misplaced' is the wordplay.
'misplaced' is an anagram indicator.
'clout'+'is'='cloutis'
'cloutis' with letters rearranged gives 'OCULIST'.
'in' acts as a link.
(Other definitions for oculist that I've seen before include "Person of vision" , "Man of vision" , "Visionary healer" , "Former name for an ophthalmologist" , "Pupils' examiner" .)