Ophthalmologist (7)
I believe the answer is:
oculist
'ophthalmologist' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for oculist that I've seen before include "Optician" , "Former name for an ophthalmologist" , "Treater of eyes" , "Visionary healer" , "Pupils' examiner" .)