过去,人们认为青光眼性视神经和视野损害发展到相当程度,中心视功能仍未受累。最近研究发现,黄斑区X 型和Y 型节细胞轴突的轴浆流最易受到眼压升高的影响而发生阻滞,进而发生结构和功能损害。但由于两种视细胞彼此排列紧密、代偿功能强,应用Snellen 视力表不能查出早期青光眼中心视功能轻微异常变化。这类青光 In the past, people thought glaucomatous optic nerve and visual field damage developed to a considerable extent, central visual function has not been involved. Recent studies have found that axial flow in the axons of the X-shaped and Y-shaped axons in the macula is most likely to be blocked by elevated intraocular pressure, resulting in structural and functional damage. However, due to the arrangement of the two visual cells close to each other, compensatory function, the application of Snellen eye chart can not detect mild abnormal changes in early glaucoma central visual function. Such glaucoma