conjunctivaa

Conjunctiva is a membrane that lines the outer surface of the eyeball and inner surface of the eyelids. It is a clear, thin layer of tissue that plays a crucial role in keeping the eye healthy by protecting it from dust, bacteria, and other foreign particles.

The conjunctiva is divided into two main parts: the palpebral conjunctiva, which covers the inner surface of the eyelids, and the bulbar conjunctiva, which covers the white part of the eye. The conjunctiva is moistened by tears, which help to keep the eye lubricated and comfortable.

In addition to its protective properties, the conjunctiva also helps to filter out foreign particles and substances that might enter the eye. When the conjunctiva is irritated or inflamed, it can lead to conditions such as conjunctivitis, also known as pink eye. This is characterized by redness, discharge, and swelling of the conjunctiva, and can be caused by a bacterial or viral infection.

The conjunctiva is also involved in the production of antibodies, which help to fight off infections. It is composed of a thin layer of epithelial cells, which are in contact with the underlying stroma, a layer of loose connective tissue. The conjunctiva receives its blood supply from the anterior ciliary arteries, which provide oxygen and nutrients to the membrane.

Overall, the conjunctiva plays a vital role in maintaining the health of the eye, and its proper functioning is essential for clear vision and the prevention of eye disease.