颅内占位性病变 ,特别是蝶鞍部的占位性病变 ,压迫视神经、视交叉而引起视力下降 ,致失明 ,并非少见 ,应引起高度重视和警惕。报告 2例如下。1　病例介绍　　例 1:患者 ,男 ,6 1岁。 1992年 7月初 ,无明显诱因突发前额部疼痛 ,持续约 10 min后感右眼视物模糊 ,次日感左眼视物模 Intracranial space-occupying lesions, especially the sella lesions of the sella department, oppression of the optic nerve, optic chiasm caused by vision loss, caused by blindness, not uncommon, should be given a high degree of attention and vigilance. The report is as follows. 1 Case Introduction Example 1: Patient, male, 6 1 year old. Early July 1992, no obvious incentive for sudden forehead pain, about 10 min after the right eye blurred vision, the next day the left eye as the material model