The Effect of Glaucomatous Visual Field Defects on Driving - A Systematic Review.

Prcis: Glaucoma patients with significant visual field defects show poorer driving performance, higher collision risks, and a greater likelihood of driving cessation. They face difficulties with lane maintenance, slower hazard responses, and self-regulation while driving.

Purpose: Glaucoma is a chronic, progressive optic neuropathy associated with visual field (VF) defects, which in advanced disease has been shown to affect patients' activities of daily living. This systematic review qualitatively analyzes existing literature that explores the impact of glaucomatous VF loss on the driving performance of glaucoma patients, the extent of driving limitation and cessation, as well as the risk of motor vehicle collisions (MVCs).

Methods: A literature search of MEDLINE and Embase (via Ovid), PubMed, Cochrane Library and Web of Science databases was performed for studies published from 2003 to 2023, with the terms "glaucoma", "visual field defect/disorder" and "driving", followed by selective vetting based on inclusion criteria. Within studies, data pertaining to study design, subject demographics, VF defect characteristics, driving performance and related outcomes were extracted.

Results: Initial search yielded 835 studies, with 20 studies selected. 3 more studies were included through hand-searching, with a total of 23 studies included for final review. Moderate to severe VF defects resulted in poorer driving performance, with slower response times to road hazards, decreased ability for lane maintenance, and increased difficulty driving at night. Patients with more severe VF defects and with bilateral glaucoma were more likely to limit or cease driving compared to those with milder and unilateral glaucoma. A greater severity of VF loss was associated with a higher risk of MVCs.

Conclusion: More severe glaucomatous VF and bilateral glaucoma is associated with worse driving performances and a higher risk of MVCs, in both simulator and real-world settings.