What Researchers Did
Researchers analyzed 5 cases (6 eyes) of radiation optic neuropathy observed over two years in patients who had undergone radiotherapy for nasopharyngeal carcinoma.
What They Found
They observed rapid visual deterioration or blindness in one or both eyes, with onset typically within 7 years after the initial radiotherapy session. Good vision was successfully saved in 2 of the affected eyes following treatment with hyperbaric oxygen.
Canadian Relevance
This study has no direct Canadian connection as it was conducted in China and does not involve Canadian researchers or patients.
Study Limitations
A significant limitation of this study is its very small sample size, reporting on only 5 cases.