eyelid coloboma - определение. Что такое eyelid coloboma
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Что (кто) такое eyelid coloboma - определение

EYE DISEASE CHARACTERIZED BY MISSING PIECES OF TISSUE IN STRUCTURES THAT FORM THE EYE, SUCH AS THE IRIS, RETINA, CHOROID OR OPTIC DISC
Coloboma of eye lens; Coloboma of iris; Coloboma of macula; Coloboma of optic papilla; Coloboma, ocular; Ocular iris coloboma; Colobomas; Ocular colobomata; Colobomata; Coloboma iridis; Iris coloboma
  • Iris coloboma in the right eye of a 10-month-old child. The pupil cannot contract to a smaller size than pictured, but may still be able to dilate in low light.

Coloboma         
·add. ·noun A defect or malformation; ·esp., a fissure of the iris supposed to be a persistent embryonic cleft.
Coloboma         
A coloboma (from the Greek is a hole in one of the structures of the eye, such as the iris, retina, choroid, or optic disc. The hole is present from birth (except for one case, where it developed within the first few months of the child's life) and can be caused when a gap called the choroid fissure, which is present during early stages of prenatal development, fails to close up completely before a child is born.
Palpebrae         
  • double eyelid surgery]]. Note the presence of the [[epicanthic fold]] in both photographs.
  • Eyelid affected by [[stye]]
THIN FOLD OF SKIN THAT COVERS AND PROTECTS THE HUMAN EYE
Eyelids; Palpebral; Palpebræ; Superior palpebrae; Eyelid diseases; Double eyelid; Human eyelid; Lower eyelid; Upper eyelid; Palpebrae; Eye lid; Asian eyes; Eyelid disease; Palpebra; Eyelid enhancement; Chinese eyelid tape; Monolid; Eyelid margin; Lid margin; Eye-lid margin; Superior eyelid; Inferior eyelid; Anterior surface of eyelid; Posterior surface of eyelid; Inferior eyelids; Superior eyelids; Blepharal
·pl of Palpebra.

Википедия

Coloboma

A coloboma (from the Greek κολόβωμα, meaning defect) is a hole in one of the structures of the eye, such as the iris, retina, choroid, or optic disc. The hole is present from birth and can be caused when a gap called the choroid fissure, which is present during early stages of prenatal development, fails to close up completely before a child is born. Ocular coloboma is relatively uncommon, affecting less than one in every 10,000 births.

The classical description in medical literature is of a keyhole-shaped defect. A coloboma can occur in one eye (unilateral) or both eyes (bilateral). Most cases of coloboma affect only the iris. The level of vision impairment of those with a coloboma can range from having no vision problems to being able to see only light or dark, depending on the position and extent of the coloboma (or colobomata if more than one is present).