Perfect scores (6-6)

I believe the answer is:

twenty-twenty

This clue is a double definition.

'perfect' is the first definition.
(I've seen this before)

'scores' is the second definition.
(I've seen this before)

(Other definitions for twenty-twenty that I've seen before include "Perfect vision" , "Normal eyesight" , "Denoting normal vision" , "Normal (as of five days ago?)" .)

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

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