Adnexa oculi

Adnexa Oculi

The Adnexa Oculi refers to the structures surrounding the eye that serve to protect and support its function. These include the eyelid, eyelashes, conjunctiva, lacrimal apparatus, and the extraocular muscles.

Eyelid

The eyelid is a thin fold of skin that covers and protects the eye. It has an outer layer of skin, a middle layer of muscle and tarsal plates, and an inner layer of conjunctiva. The eyelid also contains the meibomian glands, which produce an oily substance that prevents the tear film from evaporating.

Eyelashes

Eyelashes are hairs that grow at the edge of the eyelids. They serve to protect the eye from small particles such as dust, sand, and debris.

Conjunctiva

The conjunctiva is a thin, transparent tissue that covers the inner surface of the eyelid and the white part of the eye (the sclera). It helps to lubricate the eye by producing mucus and tears.

Lacrimal Apparatus

The lacrimal apparatus consists of the lacrimal glands, which produce tears, and the lacrimal ducts, which drain the tears into the nose. This system helps to keep the eye moist and remove any debris that may have entered the eye.

Extraocular Muscles

The extraocular muscles are a group of six muscles that control the movements of the eye. They allow the eye to move in all directions and to track moving objects.

See Also

• Eye
• Eyelid
• Eyelashes
• Conjunctiva
• Lacrimal apparatus
• Extraocular muscles