eyelid
Sign in to savethumb|Blood vessels of the eyelids, front view
AI overview
I don't have sufficient context to write an accurate overview. The provided context only shows a caption about blood vessels in eyelids and doesn't contain information about what eyelids are, their structure, or their function. I cannot write this overview without inventing facts, which you've asked me not to do.
AI-generated from the Wikipedia summary — may contain errors.
Key facts
- Anatomy.Name
- Eyelid
- Anatomy.Image
- Closed human eye, superior view.jpg
- Anatomy.Caption
- Closed human eye showing eyelid and a set of lashes which grow along the edge of the lid
- Anatomy.Latin
- palpebrae
- Anatomy.system
- Integumentary
- Anatomy.Function
- Covers and protects the eye by blinking or closing, keeping the cornea moist
- Anatomy.Image2
- Human eye with eyelid pulled open, anterior view.jpg
- Anatomy.Caption2
- The same eye with its eyelid pulled open, displaying meibomian glands on the inside and a set of lashes growing in multiple layers
via Wikipedia infobox
Article
18 sectionsContents
- Structure
- Layers
- Skin
- Nerve supply
- Blood supply
- Eyelashes
- Function
- Clinical significance
- Surgery
- Anatomical variation
- Prevalence
- Society and culture
- Cosmetic surgery
- Death
- Additional images
- See also
- References
- Sources
thumb|Blood vessels of the eyelids, front view
An eyelid ( ) is a thin fold of skin that covers and protects the eye. The levator palpebrae superioris muscle retracts the eyelid, exposing the cornea to the outside, giving vision. This can be either voluntarily or involuntarily. "Palpebral" (and "blepharal") means relating to the eyelids. Its key function is to regularly spread the tears and other secretions on the eye surface to keep it moist, since the cornea must be continuously moist. They keep the eyes from drying out when asleep. Moreover, the blink reflex protects the eye from foreign bodies. A set of specialized hairs known as lashes grow from the upper and lower eyelid margins to further protect the eye from dust and debris.