Spectacles help one to aim, of course

I believe the answer is:

sights

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

I don't understand how the rest of the clue works.

(Other definitions for sights that I've seen before include "Visual perceptions" , "Visions, views" , "Tourist attractions" , "Spectacles" , "they look ridiculous" .)

I've seen this clue in The Irish Independent.

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