Rubbish solution for irritated viewers (7)
I believe the answer is:
eyewash
I believe this is a double definition.
'rubbish' is the first definition.
(both can mean nonsense)
'solution for irritated viewers' is the second definition.
(eyes are 'viewers' - things which view)
(Other definitions for eyewash that I've seen before include "rot?" , "Bunk" , "Optic solution to relieve irritation - rubbish!" , "Balderdash" , "Nonsense; cleansing lotion" .)