本文通过４６例眼球钝挫伤所致的锯齿缘离断性视网膜脱离，分析了其发病的组织学基础、发病特点及局部外伤后的眼球改变，重点讨论了外伤引起该症的几种特征性改变及诊断依据，并对其中２０例正视眼的患眼与对侧正常眼的Ｂ超测定的眼球轴长、赤道直径和眼球容积进行比较，发现患眼的眼球容积和赤道直径明显增大，为临床预测和诊断外伤性锯齿缘离断后发生视网膜脱离提供了一种新的依据。 This article through 46 cases of eye contusion injury caused by serrated retinal detachment retinal detachment, analyzed the pathogenesis of the histological basis, onset characteristics and eyeballs after local trauma changes, focusing on the trauma caused by several characteristic changes of the disease And the basis of diagnosis. The axial length, the equatorial diameter and the eyeball volume of the B-mode ultrasonography in the 20 eyes of the eyedrops and the contralateral normal eyes were compared, and the eyeball volume and the equatorial diameter were significantly increased as Clinical prediction and diagnosis of traumatic serrated edge retinal detachment after disconnection provides a new basis.