Tezel T H, Günalp I, Tezel G
Clinic of Ophthalmology, Numune Hospital, Ankara, Turkey.
Ophthalmic Res. 1994;26(6):332-9. doi: 10.1159/000267498.
We studied morphometrically the color transparencies and fluorescein angiograms of 5 patients with six exudative retinal arterial macroaneurysms. Our aim was to express the dependence of the exudate morphology upon the location of the macroaneurysm with an algebraic polynomial analysis. We derived the second-degree conical equations of the exudate curves and computed the location of their cardinal descriptive parameters. The relationship between the site of the macroaneurysms and the computed hypothetical parameters of their exudate curves revealed that the structural features of the exudates are dependent upon the distance of the macroaneurysm to the foveola, the gravitational force and the clearing capacity of the venous net. The point where the macroaneurysm develops approximately 3 mm from the center of the macula seems to be a 'crucial point'. Macroaneurysms located closer than this point may cause the exudates that occupy the fovea and create severe visual loss.
我们对5例患有6个渗出性视网膜动脉大动脉瘤患者的彩色透明片和荧光素血管造影进行了形态测量学研究。我们的目的是通过代数多项式分析来表达渗出物形态与大动脉瘤位置之间的相关性。我们推导出了渗出物曲线的二次圆锥方程，并计算了其主要描述参数的位置。大动脉瘤部位与其渗出物曲线的计算假设参数之间的关系表明，渗出物的结构特征取决于大动脉瘤到黄斑中心凹的距离、重力和静脉网的清除能力。大动脉瘤距黄斑中心约3毫米处似乎是一个“关键点”。位于该点更近位置的大动脉瘤可能会导致渗出物占据黄斑中心凹并造成严重视力丧失。
