“中心视力”是日常活动所必需的,如阅读、驾驶、看时间,或者识别他人的面部特征等。有一种中年人高发的眼病,叫做年龄相关性黄斑变性(AMD),它能引起“中心视力”急剧下降,是引起50岁以上人群重度视力丧失的主要原因。北京协和医院眼科主任、博士生导师赵家良教授介绍。AMD 有时发展很慢,有时病情又可能迅速发展,导致视力在短时间内急剧下降。由于该病一般不会引起疼痛,所以容易使人忽视,但却会剥夺识别眼前物品的能力,也就是说,如果你专注地盯住一样东西看,会看不清。可这样东西旁边的物品却看得很清楚,这就是所谓的“中 Central vision is necessary for everyday activities such as reading, driving, watching time, or identifying other people’s facial features. There is a middle-aged eye disease, called age-related macular degeneration (AMD), which can cause a sharp drop in “central vision” and is a major cause of severe vision loss in people over 50 years of age. Beijing Union Medical College Hospital Director, doctoral tutor Professor Zhao Jialiang introduction. AMD sometimes develops very slowly, and sometimes the condition may develop rapidly, leading to a sharp decline in sight in a short time. Because the disease is generally pain-free, it tends to be overlooked, but it can deprive you of the ability to recognize the immediate object, which means you can not see it if you focus on the same thing. Can be next to such things things are very clear, this is the so-called "