已知玻璃体的变化在增殖性病变的发生和发展上起重要作用,玻璃体收缩及后脱离,可促使增殖性变化的发展。玻璃体切除术为糖尿病性增殖性视网膜病变的根治疗法,不仅可切除病变的玻璃体,而且能切除增殖组织。通常多在病变晚期进行,故对视网膜及视神经已有严重损害者,视功能仍难改善,因此有人提出可早期手术,以防增殖性病变发展及牵引性视网膜脱离发生。从而可保持良好视力。作者对增殖前期及增殖早期的患者行该手术 Changes in the vitreous known to play an important role in the occurrence and development of proliferative lesions, vitreous shrinkage and detachment, can promote the development of proliferative changes. Vitrectomy is a radical treatment of diabetic proliferative retinopathy, not only to remove the diseased vitreous, but also to remove proliferative tissue. Usually in the late stage of the disease, so the retina and optic nerve have been severely damaged, visual function is still difficult to improve, it was proposed early surgery to prevent the development of proliferative lesions and traction retinal detachment occurred. Which can maintain good eyesight. The author of pre-proliferative and proliferative patients in the early surgery