eyelid (redirected from Lower eyelid)

eyelid /eye·lid/ (-lid) either of two movable folds (upper and lower) protecting the anterior surface of the eyeball.

---

eye·lid or eye-lid (ld)

n.

Either of two folds of skin and muscle that can be closed over the exposed portion of the eyeball. Also called palpebra.

---

eyelid

either of two movable cutaneous folds (upper and lower) protecting the anterior surface of the eyeball. Most mammals and birds have a third eyelid that moves across the eye from the medial canthus.

---

eyelid abnormality

includes entropion, ectropion, ptosis.

eyelid coloboma

a congenital, full thickness defect of varying degrees in an eyelid margin.

eyelid drooping

see ptosis.

eyelid eversion

see ectropion.

eyelid inflammation

see blepharitis.

eyelid inversion

see entropion.

premature opening eyelid

opening of eyelids in puppies and kittens before the normal age of 7 to 10 days may result in exposure keratitis because of inadequate production of tears.

eyelid snapping

winking.

eyelid speculum

an instrument used to keep the eyelids apart.

third eyelid

see membrana nictitans.