Text-book of ophthalmology . ve been Ob- while at the point corresponding to this on the r,„~ l rx ii r x i xi temporal side the precursor of a staphvloma Served alter the age OI ten, and the intercalare can be perceived under the form of ii . i , • -, , an excavation, b. oldest authentic case known was be-tween fifteen and sixteen.—D.] Often it is observed at such an early agethat its beginning must be dated back to fetal life. This, as well as thefact that several children in the same family are one after another affectedwith glioma, would argue that the cause of it is in many cases to be lo
Text-book of ophthalmology . ve been Ob- while at the point corresponding to this on the r,„~ l rx ii r x i xi temporal side the precursor of a staphvloma Served alter the age OI ten, and the intercalare can be perceived under the form of ii . i , • -, , an excavation, b. oldest authentic case known was be-tween fifteen and sixteen.—D.] Often it is observed at such an early agethat its beginning must be dated back to fetal life. This, as well as thefact that several children in the same family are one after another affectedwith glioma, would argue that the cause of it is in many cases to be lookedfor in a congenital vice of development. Treatment consists in the promptest possible removal of the long as the growth is still confined to the eyeball, it is sufficient to enu-cleate the latter, in doing which we take care to divide the optic nerve as farback as possible. In such cases we may hope for a permanent cure. Whenthe tumor has perforated the eyeball and is growing outside of it, but is still. 598 TEXT-BOOK OF OPHTHALMOLOGY confined to the orbit, complete removal of the neoplasm can still be attainedthrough exenteration of the orbit (see § 897). But in this case rapid recur-rences both in loco and in the neighboring lymphatic glands seldom fail tooccur. Nevertheless, even in such cases the operation is indicated, becauseby the removal of the local focus of disease the child is spared much suf-fering. From what has been said, the prognosis is favorable only when theoperation is performed very early. [Almost 40 to 50 per cent of cases oper-ted on early are cured (Leber). Three cases of spontaneous recovery bypermanent shriveling have been reported. In inoperable cases, actino-therapy with X-ray or radium may help the process or relieve pain, and in abilateral case, has caused disappearance of the tumor in one eye, afterenucleation of the other (Axenfeld).—D.] Glioma retinae (Virchow),in contradistinction to intraocular sarcomata, is never pig-m
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