What might make us see better shows? (10)
I believe the answer is:
spectacles
'shows?' is the definition.
(I've seen this before)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for spectacles that I've seen before include "splendid entertainments?" , "Viewing aid" , "Aid to vision" , "shows?" , "See 6" .)