Eye, small
Eye, small: Also called microphthalmia, an abnormally small eye, a congenital malformation (birth defect) of the globe.
The related term “anophthalmia” means no eye and refers to absence of the globe and ocular tissue from the orbit.
Microphthalmia may involve one or both eyes. It may occur in isolation with no associated malformations or it may be part of a multiple congenital malformation syndrome as, for example, the congenital rubella syndrome, the triploidy syndrome (due to the presence of 69 chromosomes), the trisomy 13 syndrome (Patau syndrome, due to an extra chromosome 13), and the Wolf-Hirschorn syndrome (due to deletion of part of the short arm of chromosome 4).
Also called microphthalmos. Microphthalmia comes from the Greek micro-, small + the ophthalmos, eye = small eye.
Read Also:
- Eyedrop test
Eyedrop test: There are many types of eyedrops and many types of eye drop tests. One of the most common eye drop tests is pupil dilation. This examination enables your eye care professional to see more of your retina, the light-sensitive layer of tissue at the back of your eye. Dilating (widening) the pupil permits […]
- Eyelash
Eyelash: One of the familiar stiff hairs that project from the margin of the eyelid. Eyelashes tend to be noticed mainly when something goes wrong with them. An eyelash gets in your eye and irritates it; you have an ingrown eyelash; your eyelashes fall out, etc.
- Eyelid
Eyelid: The lid or cover of the eye, a movable fold of skin and muscle that can be closed over the eyeball or opened at will. Each eye has an upper and a lower lid. Also known as a palpebra.
- Eyelid myokymia
Eyelid myokymia: Fine continuous contractions of the eyelid muscle, typically involving one of the lower eyelids, less often an upper eyelid. The condition occurs spontaneously, sometimes triggered by stress, fatigue, caffeine or alcohol. In most cases, the condition is benign and ceases of its own accord. See also: Myokymia.
- Eyelids, adult ptosis of the
Eyelids, adult ptosis of the: Drooping of the upper eyelids in adults, most commonly due to separation of the tendon of the lid-lifting (levator) muscle from the eyelid. This may occur with age, after cataract or other eye surgery, or due to an injury, an eye tumor, or a complication of another disease that involves […]