Microphthalmia
Mi`croph`thal´mi`a
n. | 1. | An unnatural smallness of the eyes, occurring as the result of disease or of imperfect development. |
单词 | microphthalmia | |||
释义 | MicrophthalmiaMi`croph`thal´mi`a
microphthalmiamicrophthalmos[mi″krof-thal´mus]mi·croph·thal·mos(mī'krof-thal'mos),microphthalmiaA congenital reduction in eye size, with the ocular bulb measuring 1/2 of the normal volume in extreme cases, due to an abnormal development of the optic vesicle in the optic cup.Aetiology • Congenital—e.g., encephalo-ophthalmic dysplasia, focal dermal hypoplasia, Hallermann-Streiff syndrome, incontinentia pigmenti, Lenz microphthalmia syndrome, retinopathy of prematurity, trisomy 13-15. • Infectious—e.g., CMV, herpes, rubella, toxoplasmosis. • Toxins—e.g., foetal alcohol syndrome. Incidence 14/105; 3–11% of all cases of blindness. microphthalmiaA congenital ↓ in eye size, with the ocular bulb measuring1⁄2 of the normal volume in extreme cases, due to an abnormal development of the optic vesicle in the optic cup, which may bemicrophthalmia![]() ![]() ![]() mi·croph·thal·mos, microphthalmia (mī'krof-thal'mŏs, -mē-ă) |
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