Mayer W, Sperl W
Klin Monbl Augenheilkd. 1985 Nov;187(5):449-50. doi: 10.1055/s-2008-1054370.
Two cases of hypoplasia of the optic nerve associated with porencephaly and one case of porencephaly without ophthalmologic signs are described. The clinicopathological correlation of the double-ring sign is presented and the possible mechanism of optic nerve hypoplasia being a secondary degeneration is discussed.
本文描述了2例与脑穿通畸形相关的视神经发育不全病例以及1例无眼科体征的脑穿通畸形病例。文中阐述了双环征的临床病理相关性，并探讨了视神经发育不全作为继发性退变的可能机制。
