• 1. Department of Ophthalmology, Beijing Tiantan Hospital, Capital Medical University, Beijing 100070, China;
  • 2. Senior Department of Ophthalmology, The Chinese PLA General Hospital, Beijing 100853, China;
Wei Shihui, Email: weishihui706@hotmail.com
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Radiation-induced optic neuropathy (RION) is a severe complication of radiotherapy for head and neck tumors, characterized by painless, often irreversible visual decline after a long and highly variable latent period. Its incidence correlates with radiotherapy techniques and tumor types, with radiation dose constituting the principal risk factor. Advanced age and pre-existing vascular conditions can further elevate the risk of RION. The underlying pathology is thought to involve vascular injury, dysregulated molecular signaling, and impaired axoplasmic transport, although these mechanisms are not fully understood. Diagnosis in clinical practice remains largely exclusionary, based on patient history, imaging, and visual function testing. No specific cure exists, so management focuses on symptomatic relief and vision stabilization. Adherence to established safe radiation dose thresholds is the most effective strategy for reducing RION incidence. This review synthesizes clinical insights to summarize the epidemiology, risk factors, pathophysiology, diagnosis, and management of RION, discusses ongoing challenges in its prevention and treatment, and aims to inform more precise prevention and personalized therapeutic strategies.

Citation: Fu Tao, Wei Shihui. Progress in clinical prevention and treatment of radiation-induced optic neuropathy and reflections. Chinese Journal of Ocular Fundus Diseases, 2026, 42(4): 277-283. doi: 10.3760/cma.j.cn511434-20260306-00108 Copy

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