Objective To study the value of combined examination of (OPs) and pattern visual evoked potentials(PVEP) in diagnosis of open angle glaucoma in its early stage.

• 目的探索图形视网膜电图（PERG）、振荡电位（OPS）和图形视觉诱发电位（PVEP）联合检测对开角型青光眼早期诊断的价值。