Objective To compare the difference of early optic nerve damage and visual field defect between primary open angle glaucoma(POAG)and primary angle-closure glaucoma(PACG).

• 目的比较原发性开角型青光眼(POAG)和原发性闭角型青光眼(PACG)的早期视神经损害特征和视野损害特点的差异。