Barnett K C, Clay C E, Clegg F G
Vet Rec. 1977 Jun 11;100(24):505-8. doi: 10.1136/vr.100.24.505.
A description is given of the investigation into two outbreaks of congenital cataract in dairy herds. There is a description of the clinical signs, the incidence, the period of time over which the cases occurred and of the seasonal distribution of the births. The type of herd management is descirbed and a hereditary factor is not considered to occur. The possibility of the involvement of other toxic and environmental agents is discussed. The macroscopic and microscopical findings are described; the relation to the early period of lens development of the bovine fetus suggested.
本文描述了对奶牛群中两起先天性白内障疫情的调查。文中介绍了临床症状、发病率、病例发生的时间段以及出生的季节分布情况。描述了牛群的管理类型，且认为不存在遗传因素。讨论了其他有毒和环境因素介入的可能性。描述了宏观和微观检查结果，并提出了与牛胎儿晶状体发育早期阶段的关系。
