yläkalvon

Yläkalvon is a Finnish term that generally refers to the upper eyelid. In anatomy, it is the movable fold of skin and muscle that covers the eyeball from above. The upper eyelid plays a crucial role in protecting the eye from foreign objects and excessive light. It also helps to spread tears evenly across the surface of the eye, keeping it moist and clean.

The muscles within the upper eyelid, particularly the levator palpebrae superioris, are responsible for raising it. This action allows for blinking and opening the eye for vision. The skin of the upper eyelid is thin and delicate, making it susceptible to various conditions and cosmetic concerns.

In ophthalmology, the upper eyelid is examined as part of a comprehensive eye assessment. Issues related to the upper eyelid can include ptosis (drooping), blepharitis (inflammation of the eyelid margins), or tumors. Surgical procedures, such as blepharoplasty, may be performed to address functional or aesthetic concerns of the upper eyelid. The term is widely used in everyday Finnish conversation when discussing eye health or appearance.