szemhéjra

Szemhéjra is a Hungarian term that translates to "eyelid" in English. It refers to the folds of skin that cover and protect the eyeball. The eyelids play a crucial role in maintaining eye health by spreading tears across the ocular surface, which helps to keep it moist, clean, and free of debris. They also protect the eye from external irritants such as dust, light, and sudden impacts.

There are two eyelids: the upper eyelid and the lower eyelid. These are composed of skin, muscle, connective tissue, and a thin membrane called the conjunctiva. The muscles within the eyelids allow for blinking, which is a rapid, involuntary closing and opening of the eyelids. This action is essential for distributing tears and removing small particles.

Conditions affecting the eyelids can range from minor irritations to more serious medical issues. Common eyelid problems include styes, chalazions, blepharitis (inflammation of the eyelid margins), and ptosis (drooping of the upper eyelid). The appearance and function of the eyelids can also be affected by aging, allergies, and certain medical conditions.