A Case of Transient
Cortical Blindness after Bronchial Arteriography |
기관지동맥조영술후 발생한 일시적 피질맹 1례 |
곽규호; 서상일; 김태일; 도진국; 오희종; 이동국; 성낙관 |
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Abstract |
Cortical blindness refers to
the loss of vision produced by lesions affecting geni-culocalcarine visual pathways. The most common causes of cortical blindness are ischemic stroke; cardiac surgery; and cerebral angiography. Its characteristic clinical manifestations are: (1) bilateral partial or total blindness; (2) intact pupillary light reflexes and no abnormality in extraocular muscle movements; (3) normal ophthalmoscopic finding; (4) optokinetic nystagmus (may or may not be present). The possible mechanism of angiography-related cortical blindness is neurotoxicity of the contrast agents. Transient; symmetric enhancement in bilateral occipital lobes in CT or MRI is observed frequently. EEG is also an important diagnostic method. No specific treatment is known as effective; but several possible methods are suggested. We presented a case of transient cortical blindness after bronchial arteriography. |
Key Words:
Cortical blindness,
Neurotoxicity, Contrast agents |