20/20 vision

[English Learner]

English Language Tests, Intermediate level

ESL/EFL Test #831 "Look, See and Watch (2)", question 7

I would love to have 20/20 vision again. I can't ......... anything without my glasses.

(a) watch
(b) look
(c) looking
(d) see

English Language Tests, Intermediate level

ESL/EFL Test #831 "Look, See and Watch (2)", answer 7

I would love to have 20/20 vision again. I can't see anything without my glasses.

Correct answer: (d) see
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what does 20/20 mean?

[Beeesneees]

'20/20 vision' is 'perfect vision'.
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Cheers m' dears!