They help you see clean contests, for a change (7,6)
I believe the answer is:
contact lenses
'they help you' is the definition.
The definition suggests an adverb but the answer is not.
'clean contests for a change' is the wordplay.
'for a change' is an anagram indicator.
'clean'+'contests'='cleancontests'
'cleancontests' anagrammed gives 'CONTACT LENSES'.
'see' is the link.
Can you help me to learn more?
(Other definitions for contact lenses that I've seen before include "Visual aid" , "Alternative to glasses" , "Alternative to spectacles" , "one wouldn't want them to fall out!" , "Aids to vision" .)