Crossword Genius

Time to take a different position in the issue of sight (5)

Ross

I believe the answer is:

optic

'of sight' is the definition.
(I've seen this in another clue)

I cannot understand how the remainder of the clue works.

(Other definitions for optic that I've seen before include "Visual" , "Alcoholic drink dispenser" , "Pertaining to the eye" , "connected to the eye" , "bar assistant" .)

I've seen this clue in The Guardian.
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