The human eye is a roughly spherical organ that receives visual impulses and processes them. It is contained within the skull's eye sockets and is held in place by muscles within the sockets.

Because the eye is made up of two parts fused together, it does not have a perfectly spherical form. External components are structures visible from the outside of the eye, while internal components are structures found within the eye.

The following are examples of external and internal components:

Retina,Vitreous Humour, aqueous humour ,Sclera ,Conjunctiva ,Cornea, Iris, Pupil.