What role do human eye shells play?

1) Protein membrane – protection of the internal structures of the eye from damage, as well as the role of the frame.
2) Cornea – light refraction, protection of the internal structures of the eye from damage.
3) Vascular membrane – blood supply to the eye.
4) Iris – regulation of the light entering through the pupil.
5) The retina (retina) is the perception of light and color, the appearance of impulses.

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