Donoso L A, Magargal L E, Eiferman R A, Meyer D
Can J Ophthalmol. 1981 Apr;16(2):85-7.
Three lesions simulating duplication of the optic disc are described. In case 1 the lesion was thought to be an ectatic peripapillary coloboma. Computer-assisted tomography demonstrated a single optic nerve in each orbit. In case 2 two optic disc with separate vascular systems were observed in photographs; blood vessels arising from the upper disc appeared to supply the superior portion of the retina, including the fovea. In case 3 a colobomatous defect with vascular anastomosis to the optic disc was observed in photographs. The resemblance of duplication of the optic disc to congenital disc anomalies, ectatic peripapillary colobomas and other simulating lesions is discussed. True duplication of the optic disc with associated duplication of the optic nerve is rare.
本文描述了三例模拟视盘重复的病变。病例1中，病变被认为是扩张性视乳头周围缺损。计算机断层扫描显示每个眼眶内有一条视神经。病例2中，照片上观察到两个具有独立血管系统的视盘；来自上方视盘的血管似乎供应视网膜的上半部分，包括中央凹。病例3中，照片上观察到一个与视盘有血管吻合的缺损性病变。本文讨论了视盘重复与先天性视盘异常、扩张性视乳头周围缺损及其他模拟病变的相似之处。真正的视盘重复伴视神经重复很罕见。
