Ashwin Pammal T, Quinlan Mike
Department of Ophthalmology, Dudley Group of Hospitals, Guest Hospital, Dudley DY1 4SE West Midlands, UK.
Eur J Intern Med. 2006 Mar;17(2):144-5. doi: 10.1016/j.ejim.2005.08.012.
Binasal hemianopia is a rare neurological finding. Interpreting this can be challenging, especially in the absence of pathology on neuroimaging. As with other types of neurological visual field defects, there can be ocular causes. We report an incidentally discovered case of binasal hemianopia that was caused by keratoconus. There has been no published report of keratoconus giving rise to this kind of field defect to date. We also discuss published reports of binasal hemianopia to emphasise that this type of field defect has more to do with the 'eye' than the 'brain', and we recommend an ophthalmological opinion for such patients, especially in the absence of corresponding neurological signs.
双颞侧偏盲是一种罕见的神经学表现。对其进行解读可能具有挑战性，尤其是在神经影像学检查未发现病变的情况下。与其他类型的神经视野缺损一样，可能存在眼部病因。我们报告了一例偶然发现的由圆锥角膜引起的双颞侧偏盲病例。迄今为止，尚无关于圆锥角膜导致这种视野缺损的报道。我们还讨论了已发表的双颞侧偏盲报告，以强调这种类型的视野缺损与“眼睛”的关系比与“大脑”的关系更大，并且我们建议此类患者寻求眼科专家的意见，尤其是在没有相应神经学体征的情况下。
