Part of the eye - Crossword Clue, Answer and Explanation

'part of the eye' is the definition.
(I know this)

This is the entire clue.

(Other definitions for iris that I've seen before include "Circular coloured membrane in the eye" , "Flower and eye membrane" , "Woman" , "Eye diaphragm" , "bloomer?" .)

I've seen this clue in The Mirror, The New York Times, The Sun, The Guardian, the USA Today, The Times, the Sydney Morning Herald, the Penny Press, The Telegraph and the Newsday.

'part of the eye' is the definition.
(I know this)

This is all the clue.

(Other definitions for lens that I've seen before include "Optical device using light to form images" , "Piece of glass, usually curved" , "Camera component" , "Refracting device" , "feature of camera" .)

I've seen this clue in The Mirror, The New York Times, The Sun, The Guardian, the USA Today, The Times, the Sydney Morning Herald, the Penny Press, The Telegraph and the Newsday.

'part of the eye' is the definition.
('cone' is part of 'eye')

This is the entire clue.

(Other definitions for cone that I've seen before include "Road works marker" , "Solid figure" , "Road furniture!" , "it may hold ice-cream" , "Portable marker for lines on road" .)

I've seen this clue in The Mirror, The New York Times, The Sun, The Guardian, the USA Today, The Times, the Sydney Morning Herald, the Penny Press, The Telegraph and the Newsday.

'part of the eye' is the definition.
(I know this)

This is all the clue.

(Other definitions for uvea that I've seen before include "bit of a looker" , "The pigmented layer of the eye" , "part of eye be seen" , "Part of the eyeball which houses the iris" , "bit of mince pie!" .)

I've seen this clue in The Mirror, The New York Times, The Sun, The Guardian, the USA Today, The Times, the Sydney Morning Herald, the Penny Press, The Telegraph and the Newsday.

'part of the eye' is the definition.
(I know this)

This is all the clue.

(Other definitions for retina that I've seen before include "Light-sensitive membrane in the eye" , "part of the water pump" , "Eye's membrane" , "Light-sensitive eye lining" , "Membrane that can become detached" .)

I've seen this clue in The Independent, The Guardian, the USA Today, The Times, the Sydney Morning Herald, the Penny Press, The Telegraph and the Newsday.

'part of the eye' is the definition.
(I know this)

This is the entire clue.

(Other definitions for pupil that I've seen before include "A student at school or eye part" , "Scholar" , "One being taught" , "Learner at educational institution" , "one may see through!" .)

I've seen this clue in The Telegraph, The Guardian and the Universal.

Part of the eye (6)