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An eyelid ( / ˈaɪ.lɪd / EYE-lid) is a thin fold of skin that covers and protects an 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.
Feb 2, 2021 · Eyelids cannot close quickly enough for every hazard, though. This is why so many professions and activities require eye protection. A quick overview of the key parts of the eyelids will help you understand why they are so important to the vision system.
Oct 30, 2023 · The eyelids are thin mobile folds of soft tissue covering and protecting the anterior surface of the eyeball. Function. Regulating light reaching the eye, maintaining and distributing the eye's tear film during blinking and maintaining tear flow, by acting on the conjunctival and lacrimal sacs.
May 24, 2024 · Your eyelids are a protective covering for your eyes, shielding them from outside objects and light. They also keep moisture in and help the surface of your eyes stay lubricated. Your eyelids are a unique part of your body because they’re the only external layer of skin with no under-the-skin (subcutaneous) fat.
Aug 31, 2017 · An eyelid is a fold of skin that closes over the eye to protect it. There are upper and lower eyelids. Many things can affect the eyelids or are related to the eyelid. These include: Bell’s Palsy; Black Eye; Blepharitis; Cellulitis; Chalazia and Styes; Coloboma; Conjunctivitis (Pink Eye) Dry Eye; Eye Allergies; Eyelid Spasm or Twitching ...
Oct 25, 2020 · The eyelids are thin, mobile folds that cover the eyeball anteriorly. They offer protection from excessive light or injury, and maintain lubrication by distributing tears over the surface of the eyeball.
Nov 9, 2022 · So if your eyelids aren’t the same size or don’t look the same, that’s normal. But in rare cases, uneven eyelids can be a sign of another health problem, like a thyroid disorder, for example.
Dec 20, 2022 · Blepharitis, the medical term for irritated, swollen eyelids, is a common condition. The edges of your lids turn red or dark in color and become swollen and scaly.
May 10, 2022 · Blepharitis (blef-uh-RYE-tis) is inflammation of the eyelids. Blepharitis usually affects both eyes along the edges of the eyelids. Blepharitis commonly occurs when tiny oil glands near the base of the eyelashes become clogged, causing irritation and redness.
eyelid, movable tissue, consisting primarily of skin and muscle, that shields and protects the eyeball from mechanical injury and helps to provide the moist chamber essential for the normal functioning of the conjunctiva and cornea.
