Parisi J L, Bell R A, Yassein H
Department of Ophthalmology, Queen's University, Kingston General Hospital, Ont.
Can J Ophthalmol. 1991 Aug;26(5):252-6.
Significant functional impairment due to loss of visual field may seriously compromise the safe operation of a motor vehicle. The variable degree of recovery from homonymous hemianopic field defects and the lack of standardized provincial licensing guidelines on visual field defects further compound the difficulty in managing such patients. We reviewed the records of 60 patients with homonymous hemianopic field defects who were followed for an average of 27 months. The ability of the patients to meet the current provincial licensing standards was evaluated on presentation and over the follow-up period. On presentation 34 patients (57%) did not meet the minimum field requirements for an unrestricted license in any province or territory. At the most recent follow-up visit 20 patients (33%) had functional improvement, as measured by their ability to meet the requirements of more regions than they could initially. Four patients (7%) became functionally worse. Patients with homonymous hemianopic field defects should be followed for at least 2 years. The physician should inform the patient that a significant visual disability exists and advise him or her to cease driving when minimum standards are not met.
视野缺损导致的严重功能障碍可能会严重影响机动车的安全驾驶。同侧偏盲性视野缺损的恢复程度不一，且各省缺乏关于视野缺损的标准化驾照许可指南，这进一步增加了此类患者管理的难度。我们回顾了60例同侧偏盲性视野缺损患者的记录，这些患者平均随访了27个月。在就诊时及随访期间评估了患者达到当前省级驾照许可标准的能力。就诊时，34例患者（57%）不符合任何省份或地区无限制驾照的最低视野要求。在最近一次随访时，20例患者（33%）功能有所改善，通过他们能够满足比最初更多地区的要求来衡量。4例患者（7%）功能变差。同侧偏盲性视野缺损患者应至少随访2年。医生应告知患者存在严重视力残疾，并建议其在未达到最低标准时停止驾驶。
