Eyesores with distinctive appearances left out (5)

I believe the answer is:

styes

I'm a little stuck... Click here to teach me more about this clue!

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

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

(Other definitions for styes that I've seen before include "Eyelid swellings" , "Eye troubles" , "Problems seeing" , "Eye infections" , "gatherings" .)

I've seen this clue in the Irish Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.