某患者于一月前做了LASIK，目前视力模糊，检查如图，考虑为以下哪一种并发症() ["A．眩光","B．瓣膜下上皮植入","C．过矫","D．欠矫","E．虹视"]
何谓脊髓压迫综合征？其临床表现如何？
根据近视度数分类，高度近视的屈光度高于() ["A．-2.00D","B．-4.00D","C．-6.00D","D．-8.00D","E．-10.00D"]
试述脑疝病人的急救及护理。
由多振子电子探头超声束形成的伪影叫() ["A．混响","B．切片厚度伪影","C．旁瓣效应","D．声影","E．后方回声增强"]
脑幕裂孔疝和枕骨大孔疝的临床表现及抢救方法有何不同？
