Crossword Genius

Concerning sight of news stories as leader moves further right (7)

Ross

I believe the answer is:

optical

'concerning sight' is the definition.
(relating to sight)

I cannot understand how the remainder of the clue works.

(Other definitions for optical that I've seen before include "Sort of illusion" , "Topical (anag.)" , "Using visible light" , "Sighted" , "Coal tip (anag)" .)

I've seen this clue in The Independent.
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