How do your eyes protect you from disease and infection?

Our eyes have several important defense mechanisms that protect them from disease and infection. These mechanisms include:

Eyelids: The eyelids are the most important physical barrier protecting the eyes. They help to keep out foreign objects, such as dust, dirt, and insects. The eyelids also spread tears across the surface of the eye, which helps to wash away any irritants.

Eyelashes: Eyelashes help to keep dust, dirt, and other foreign objects from entering the eye. They also help to channel tears away from the eye.

Tears: Tears are produced by the lacrimal glands, located above each eye. Tears contain a variety of antimicrobial substances, such as lysozyme and lactoferrin, which help to kill bacteria and viruses. Tears also help to keep the surface of the eye moist and lubricated.

Conjunctiva: The conjunctiva is a thin membrane that lines the eyelid and covers the white part of the eye. The conjunctiva contains specialized cells that help to produce antibodies, which are proteins that fight off infection.

Cornea: The cornea is the clear, front part of the eye. It is made up of a tough, fibrous material that helps to protect the eye from damage. The cornea also contains specialized cells that help to produce antimicrobial substances.

By working together, these defense mechanisms help to protect the eyes from disease and infection. However, it is important to note that even the healthiest eyes can still be infected or damaged. If you experience any eye problems, such as pain, redness, or swelling, it is important to see an eye doctor right away.