Get through to little Leonard's way of seeing things (7,4)

I believe the answer is:

contact lens

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'seeing things' is the definition.
The definition suggests a singular noun which matches the answer.

'get through to little leonard's way' is the wordplay.
'get through' becomes 'contact' (synonyms).
'to little leonard' becomes 'len' (I've seen this in another clue).
'way' becomes 's' (Compass direction - South).
'contact'+'len'+'s'='CONTACT LENS'

'of' is the link.

Can you help me to learn more?

(Other definitions for contact lens that I've seen before include "Eyesight corrector" , "Sight corrector" , "you're supposed to see through it" , "Visual aid" , "Aid to vision" .)

I've seen this clue in The Everyman puzzle in The Observer.

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