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A case of congenital occipital hemianopia who exhibited specific eye movement during driving Takuya Shibata 1 , Shiho Kunimatsu-Sanuki 1 , Takuya Hiraga 1 , Yuka Fukano 1 , Emina Iwasaka 1 , Yuri Kuroda 1 , Masakazu Hirota 2 , Atsushi Mizota 1 , Kenji Inoue 3 1Nishikasai Inouye Eye Hospital 2Department of Orthoptics, Faculty of Medical Technology, Teikyo University 3Inouye Eye Hospital pp.1082-1088
Published Date 2024/9/15
DOI https://doi.org/10.11477/mf.1410215269
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Abstract Purpose:Congenital homonymous hemianopia is a rare disorder that is often overlooked in childhood and discovered incidentally in adulthood due to lack of subjective symptoms of visual field defects.

Case:A 51-year-old man was eye strain, and congenital homonymous hemianopia in the right eye was incidentally diagnosed. Corrected visual acuities were 20/20 in both eyes. Visual field examination demonstrated homonymous hemianopia with macular sparing. Optical coherence tomography of the macular ganglion cell complex(GCC)showed a hemianopic pattern of thinning with nasal thinning in the right eye and temporal thinning in the left eye. The ocular position was exotropia and hypotropia. His eye movements were restricted in the left eye, with inadequate convergence, and lack of retinal correspondence. His right eye was the dominant eye and fixation was possible in either eye. The patient's driving ability was assessed using a driving simulator. In the first simulation, he had motor vehicle collisions in 3 out of 15 scenarios. DS revealed an overall deviation of gaze from the center to the right(hemianopia side), and he could not handle subjects coming from the left. We instructed the patient to be careful to look not only at the half-blind side but also at the non-blind side when driving.

Conclusions:It may be helpful to avoid motor vehicle collisions by analyzing specific eye movements during driving using a driving simulator.


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電子版ISSN 1882-1308 印刷版ISSN 0370-5579 医学書院

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