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老年性黄斑变性分两型:非渗出型—视网膜色素上皮玻璃疣及色素紊乱,黄斑区不同程度萎缩;渗出型—视网膜下新生血管膜形成,导致视网膜下出血,最后视网膜下及视网膜形成瘢痕。许多学者认为,视网膜下新生血管膜的产生是造成视力严重损害的原因。Hyman最近的流行病学研究发现,老年性黄斑变性有88％的患眼视力丧失是由于渗出型黄斑变性引起。非渗出型黄斑变性视力损害较少。且进展缓慢。氩激光可治疗老年性黄斑变性,因此确定视网膜下新生血管膜的存在及部位十分重要。资料表明在中心凹周围毛细血管网200μm以外的病变,氩激光治疗有
Age-related macular degeneration is divided into two types: non-exudative - retinal pigment epithelium drusen and pigment disorders, varying degrees of macular atrophy; exudate - subretinal neovascularization, resulting in subretinal hemorrhage, the final subretinal and retinal formation scar. Many scholars believe that the production of retinal neovascular membrane is the cause of serious vision damage. Hyman’s recent epidemiological study found that 88% of patients with age-related macular degeneration had ocular loss due to exudative macular degeneration. Non-exudative macular degeneration less visual impairment. And progress is slow. Argon laser treatment of age-related macular degeneration, so to determine the existence and location of subretinal neovascular membrane is very important. Data show that in the fovea capillaries 200μm outside the lesion, argon laser treatment