nanophthalmia

nanophthalmos

 [nan″of-thal´mus]

abnormal smallness in all dimensions of one or both eyes in the absence of other ocular defects; see microphthalmos.

Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

mi·croph·thal·mos

(mī'krof-thal'mos),

Abnormal smallness of the eye.

Synonym(s): microphthalmia, nanophthalmia, nanophthalmos

[micro + G. ophthalmos, eye]

Farlex Partner Medical Dictionary © Farlex 2012

microphthalmia

A 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.

Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.