Norn M
Acta Ophthalmol (Copenh). 1985 Apr;63(2):236-41. doi: 10.1111/j.1755-3768.1985.tb01540.x.
Examinations of a series of 1241 subjects showed episcleral pigment spots bearing relation to scleral canal emissaries to be most frequent among Eskimos (prevalence 85%), somewhat less frequent among Mongols (68%), and the rarest among white Northern Europeans (16%). The prevalence is the highest among women and rises very little with increasing age. The pigmentation is most often bilateral in Eskimos (66%), more rarely so in Caucasians (18%). It is most often localized superiorly (54%). Then follows in decreasing order to frequency:inferiorly (26%), nasally (13%), and - significantly more rarely - temporally (7%). The pigmentation is most often related to an artery (90%), most often one running a radial course (39%) or in the incyclo-direction (32%). Its average length in caucasians is 1.1 mm. Pigmentations are significantly related to the colour of the iris (visible in 8% of blue irides, against in 40% of brown).
对1241名受试者的检查显示，与巩膜管 emissaries 相关的巩膜色素斑在爱斯基摩人中最为常见（患病率85%），在蒙古人中稍少（68%），在北欧白人中最为罕见（16%）。患病率在女性中最高，且随年龄增长上升幅度很小。色素沉着在爱斯基摩人中最常为双侧性（66%），在白种人中较少见（18%）。它最常位于上方（54%）。然后按频率递减顺序为：下方（26%）、鼻侧（13%），以及——明显更少见的——颞侧（7%）。色素沉着最常与一条动脉相关（90%），最常见的是走行呈放射状（39%）或呈内环方向（32%）。在白种人中其平均长度为1.1毫米。色素沉着与虹膜颜色显著相关（在8%的蓝色虹膜中可见，而在40%的棕色虹膜中可见）。
