pääkyynelrauhanen

The pääkyynelrauhanen, also known as the lacrimal gland, is a small, almond-shaped gland located in the upper, outer portion of each eye socket. Its primary function is to produce and secrete the watery component of the tear film. This fluid plays a crucial role in maintaining ocular health by lubricating the surface of the eye, washing away debris and irritants, and providing essential nutrients to the cornea.

Tears are a complex mixture, and the pääkyynelrauhanen is responsible for the serous or watery layer. This layer helps to keep the eye moist and comfortable, preventing dryness and irritation. The production of tears is regulated by the nervous system and can be stimulated by various factors, including emotions, irritants, and even blinking.

Disorders affecting the pääkyynelrauhanen can lead to conditions such as dry eye syndrome, characterized by a lack of sufficient tears, or excessive tearing, known as epiphora. Inflammation of the gland, called dacryoadenitis, can cause pain, swelling, and redness around the eye. The proper functioning of the pääkyynelrauhanen is therefore vital for clear vision and overall eye comfort.