Gerhards H, Werry H, Deegen E, Köstlin R G
Klinik für Pferde der Tierärztlichen Hochschule Hannover.
Tierarztl Prax. 1992 Jun;20(3):282-6.
Coloboma and ectopia of the crystalline lens are rarely encountered or diagnosed congenital defects of the equine eye. The clinical and ophthalmoscopic features of a congenital coloboma of the lens in a 3 year old Hanoverian stallion and of an ectopic lens in a 6-month old Hanoverian filly are described and depicted. In the stallion, the lens coloboma was associated with a partial coloboma of the zonules, and in the filly, the ectopic lens was small and spherical (microphakia, spherophakia) and associated with syneresis of and small floaters in the vitreous. Although it cannot be excluded that the ectopic position of the lens may have originated from prenatal uveitis, it was classified as congenital in this case. In both eyes, there were no other clinically detectable congenital defects.
晶状体缺损和晶状体异位是马眼罕见的先天性缺陷，鲜有病例被发现或诊断。本文描述并展示了一匹3岁汉诺威种公马先天性晶状体缺损以及一匹6个月大的汉诺威母马晶状体异位的临床和检眼镜特征。在这匹种公马中，晶状体缺损与部分悬韧带缺损有关；在这匹母马中，异位晶状体小且呈球形（小晶状体、球形晶状体），并伴有玻璃体皱缩和少量漂浮物。尽管不能排除晶状体异位可能源于产前葡萄膜炎，但在该病例中仍被归类为先天性。两只眼睛均未发现其他临床上可检测到的先天性缺陷。
