Department of Ophthalmology, Mayo Clinic, Rochester, MN 55905, USA.
J Glaucoma. 2010 Sep;19(7):427-31. doi: 10.1097/IJG.0b013e3181c4b12f.
To report a case of homonymous hemianopia detected by short wavelength automated perimetry (SWAP) in a patient with normal standard automated perimetry (SAP) and magnetic resonance imaging (MRI) of the brain and orbits.
A 61-year-old woman with a history of motor vehicle accident with head injury nearly 50 years before presentation was referred for further evaluation as a glaucoma suspect. Complete ophthalmic examination, corneal pachymetry, SAP, SWAP, retinal nerve fiber layer analysis by ocular coherence tomography, and brain and orbital MRI were done.
The patient had intraocular pressure (IOP) of 18-mm Hg and vertical cup-to-disc ratios of 0.8 in each eye. Superior neuroretinal rim pallor was detected in both optic discs on dilated optic nerve examination, and corresponding retinal nerve fiber layer thinning was detected with ocular coherence tomography. SAP indicated minimal nonspecific changes in the right eye, whereas the left eye had a normal visual field. SWAP revealed a left homonymous hemianopia. Neurologic examinations and MRI of the brain and orbits were found to be normal.
SWAP can detect subtle hemianopic field defects in patients with normal standard perimetry.
报告 1 例短波长自动视野计（SWAP）检测到的同形同侧偏盲患者，该患者标准自动视野计（SAP）和脑及眼眶磁共振成像（MRI）正常。
一位 61 岁女性，近 50 年前因车祸头部受伤，有头部外伤史，被转诊进一步评估为疑似青光眼。进行了全面眼科检查、角膜厚度测量、SAP、SWAP、眼相干断层扫描的视网膜神经纤维层分析以及脑和眼眶 MRI。
患者双眼眼压（IOP）为 18mmHg，垂直杯盘比均为 0.8。双眼视盘散瞳后检查发现上方神经视网膜边缘苍白，眼相干断层扫描显示相应的视网膜神经纤维层变薄。SAP 显示右眼有轻微非特异性改变，而左眼视野正常。SWAP 显示左侧同形同侧偏盲。神经科检查和脑及眼眶 MRI 正常。
SWAP 可检测出 SAP 正常的患者存在细微的偏盲性视野缺损。
