Part of the eye - Crossword Clue, Answer and Explanation

'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 Telegraph, the Penny Press, the Newsday, the USA Today, The Sun, the Sydney Morning Herald, The Guardian, The Times, The New York Times and The Mirror.

'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 Telegraph, the Penny Press, the Newsday, the USA Today, The Sun, the Sydney Morning Herald, The Guardian, The Times, The New York Times and The Mirror.

'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 Telegraph, the Penny Press, the Newsday, the USA Today, The Sun, the Sydney Morning Herald, The Guardian, The Times, The New York Times and The Mirror.

'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 Telegraph, The Independent, the Penny Press, the Newsday, the USA Today, the Sydney Morning Herald, The Guardian and The Times.

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

This is all the clue.

(Other definitions for cornea that I've seen before include "Transparent part of the eye" , "Transparent outer covering of eyeball" , "bit of a looker" , "Body part" , "Eyeball membrane" .)

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

'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 Universal, The Telegraph and The Guardian.

Part of the eye (4)