Research progress on morphology and associations of peripapillary atrophy

Through the different image technologies, peripapillary atrophy can be classified into four types:α zone,β zone,γ zone and δ zone. Each type of them has different imaging and histological features. Peripapillary atrophy is a common structure in peoples' eyes and it is correlated with many factors and diseases such as age, myopia, glaucoma, non-arteritic anterior ischemic optic neuropathy and age-related macular degeneration which bring difficulties to our diagnosis and antidiastole. Classifying and qualifying peripapillary atrophy properly, which can evaluate the changes and degrees, can benefit our studies about their mechanism and offer the clinical biological indictors and research basis.