A one-eyed means of correction (7)
I believe the answer is:
monocle
This clue might be a double definition.
'a one-eyed means' is the first definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe you can see a link between them that I don't see?
'correction' is the second definition.
Although both the answer and definition are singular nouns, I don't understand how one could define the other.
'of' acts as a link.
Can you help me to learn more?
(Other definitions for monocle that I've seen before include "optical device" , "Reading glass for one eye only" , "lens" , "Single eyeglass" , "One-lens seeing apparatus" .)