Sheep Eye Dissection

The anatomy of the sheep's eye parts is noted in the videos. The physiology of those parts are listed below the videos. The sequence the parts are listed is the same sequence as the one shown in the video.

Internal Anterior Anatomy

• The vitreous humor is a semi-fluid that fills the central cavity of the eye.
• The retina contains the photoreceptors for vision.
• The blind spot is the point of entry of the optic nerve on the retina that is insensitive to light.
• The choroid contains an extensive network of blood vessels that bring nourishment and oxygen to itself and the other two layers.
• The choroid peel layer is used to nourish the back of the eye. The retina layer is firmly attached to the choroid at one place.

External Anatomy

• The cornea is the transparent layer forming in front of the eye.
• The sclera is the white of the eye.
• The optic nerve transmits impulses to the brain from the retina at the back of the eye.
• The external eye muscle is on the front and rear surfaces of the eye.
• The fatty tissue is on the front and rear surfaces of the eye.

Interior Posterior Anatomy

• The ciliary body controls the shape of the lens and produces the aqueous humor.
• The lens changes the shape to focus light on the retina.
• The suspensory ligament is a ligament that supports a body part, especially an organ. The suspensory ligament holds the normal lens in place in the sheep eye.
• The iris is the colored portion of the eye. 
• The pupil is the opening in the iris through which light passes.
• The aqueous humor is found behind the cornea and helps to maintain the shape of the eye.