Looker's nerve twitching after surgery? (5)
I believe the answer is:
optic
'looker's nerve' is the definition.
'optic' can be an answer for 'nerve' (optic nerve is a kind of nerve). I am unsure of the 'looker's' bit.
'twitching after surgery?' is the wordplay.
'twitching' becomes 'tic' (tic is a kind of twitching).
'after' is a charade indicator (letters next to each other).
'surgery?' becomes 'op' (short for operation).
'tic' put after 'op' is 'OPTIC'.
Can you help me to learn more?
(Other definitions for optic that I've seen before include "Alcoholic drink dispenser" , "connected to the eye" , "Body part" , "Teacher's maybe dispensed with this" , "Pub measuring device" .)