老年性黄斑变性(AMD),是一种随年龄增长而发生和发展的脉络膜毛细血管、Bruch膜、视网膜色素上皮、光感受器和视网膜的变性。AMD是欧美国家65岁以上老年人低视力和盲目的首要原因。随着人们寿命的延长,AMD的患病率将不断上升。据美国国家眼科研究所估计,每年约有10万人罹患AMD,因本病新致盲者超过1.6万。Framingham眼科研究所的调查资料表明,在75岁以上的人群中,大约1/3的女性和1/4 Age-related macular degeneration (AMD) is a form of choriocapillaris, Bruch’s membrane, retinal pigment epithelium, photoreceptors, and retinal degeneration that occur and develop with age. AMD is the primary cause of low vision and blindness in the elderly over 65 in Europe and the United States. As people live longer, the prevalence of AMD will continue to rise. According to the National Eye Institute estimates that each year about 10 million people suffer from AMD, the disease caused more than 16,000 new blind people. Survey data from the Framingham Institute of Ophthalmology show that in the population over 75 years old, about one third of women and one quarter