Silver touching eyes said to feel highly uncomfortable (7)
I believe the answer is:
agonise
'said to feel highly uncomfortable' is the definition.
I can't tell whether this defines the answer.
'silver touching eyes' is the wordplay.
'silver' becomes 'Ag' (Ag is the chemical symbol for silver).
'touching' becomes 'on'.
'eyes' becomes 'ise' (I am not sure about this - if you are sure you should believe this answer much more).
'ag'+'on'+'ise'='AGONISE'
Can you help me to learn more?
(Other definitions for agonise that I've seen before include "Undergo great anguish" , "Labour" , "Fret, worry inordinately" , "Suffer torment" , "Suffer great pain over something" .)