临床工作中经常见到在已有眼底病变的基础上发生白内障,特别是在年龄大的病人。常见的眼底病变是视神经病变、视网膜血管病变及视网膜变性。由于对上述眼底病变缺乏有效疗法,只有实行白内障摘出才有改善视力的可能,但在实际工作中,当初期或发展 It is common in clinical practice to have cataracts based on the presence of fundus lesions, especially in older patients. Common fundus lesions are optic neuropathy, retinal vascular disease and retinal degeneration. Due to the lack of effective treatment of the above fundus lesions, only the implementation of cataract extraction may improve vision, but in actual work, when the initial or development