2442 Optic nerve coloboma and hypoplasia in fetal life
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چکیده
منابع مشابه
2442 Optic nerve coloboma and hypoplasia in fetal life
Purpose: Visual symptom6 and siSm & with Central NSystem (CNS) tumours rm frequent Se, ~~~~-@thahtte~d tixamidm d treatment of theBe tutualrs. The aldhas mede&tians in 61 children pkntiag CNS tumatm. Clinical, hyn@&dcgitxd andanatmnical cotnlations arepreadedinddiecuned. lteeultr: Differat hyraqmblo&al m of CNS hlmow werefald astmcylomas (46.1 %) arsbellum Mmytormv (5.0 %)), tuaim Yaocyuanss (9...
متن کاملOptic Nerve Hypoplasia
Congenital anomalies of the optic disc underlie many cases of decreased vision, strabismus, and nystagmus in childhood. A comprehensive evaluation necessitates an understanding of the ophthalmoscopic features, associated neuro-ophthalmologic findings, pathogenesis, and appropriate ancillary studies for each anomaly. The subclassification of different forms of “colobomatous” defects on the basis...
متن کاملUnusual Coloboma of the Optic Nerve Entrance.
DEVELOPMENTAL anomalies of the eye in the region of the optic disc are commonly divided into two groups: those in which failure of coaptation occurs within the optic nerve sheath and those showing lesions of the peripapillary choroid or sclera. With the exception of the small holes sometimes seen on the anterior surface of the optic disc, which are probably related to aberrant formation of Berg...
متن کاملSpectrum of optic nerve hypoplasia.
Optic nerve hypoplasia is a non-progressive condition characterised by subnormal vision and a subnormal number of optic nerve axons. It may be unilateral or bilateral, isolated or combined with other defects. Analysis of fundus photographs from a series of 7 patients with a stationary abnormality of different degrees showed that the functional defects could be closely correlated with defects in...
متن کاملHypoplasia of the optic nerve.
Hypoplasia of the optic nerve is uncommon (Scheie and Adler, I94I; Somerville, I962; Whinery and Blodi, I963; Ewald, I967). It is usually due to a failure of development of the ganglion cell layer of the retina and results in a small but discernible optic disc with central vessels. The disc may be cupped with a peripapillary, mottled, yellowish halo corresponding to the size of the normal disc,...
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ژورنال
عنوان ژورنال: Vision Research
سال: 1995
ISSN: 0042-6989
DOI: 10.1016/0042-6989(95)90238-4