Alteration in the structural appearance of the optic disk and retinal nerve fiber layer usually precedes the development of reproducible glaucomatous visual field defects.

• 开角型青光眼视盘形态及视神经纤维层结构的改变早于视野的改变,有效检测这些形态学改变对早期诊断与治疗青光眼具有重要意义。