Wolf E D, Vainisi S J, Santos-Anderson R
J Am Vet Med Assoc. 1978 Nov 15;173(10):1331-3.
Rod-cone dysplasia in the Collie was studied. Night blindness developed early (6 wk) and progressed to nearly total blindness by 1 year of age. Tapetal hyper-reflectivity, vessel attenuation, and optic nerve pallor were clinically evident by 6 months of age. Electroretinography demonstrated markedly reduced retinal response as early as 16 days of age. The results of selective breedings conformed to a single recessive pattern of inheritance.
对柯利牧羊犬的视杆-视锥发育不良进行了研究。夜盲症出现较早（6周龄），到1岁时发展为几乎完全失明。6月龄时，临床上明显可见脉络膜反光增强、血管变细和视神经苍白。视网膜电图显示，早在16日龄时视网膜反应就明显降低。选择性繁殖的结果符合单一隐性遗传模式。
