Crossword Genius

Get in touch with Leonard's helper for pupil? (7,4)

Ross

I believe the answer is:

contact lens

I'm a little stuck... Click here to teach me more about this clue!

'helper for pupil?' is the definition.
I can't tell whether this definition defines the answer.

'get in touch with leonard's' is the wordplay.
'get in touch with' becomes 'contact' (I've seen this before).
'leonard's' becomes 'len's' (I've seen this in other clues).
'contact'+'lens'='CONTACT LENS'

Can you help me to learn more?

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

I've seen this clue in The Daily Mail.
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