For years, the results of photodynamic therapy have stumped clinicians. In the cancer treatment, light is used to destroy malignant cells. But one of the side effects is strange: patients are often better able to see in the dark.
Researchers have spent time building on the current knowledge of retinal to figure out why this 'night vision' occurs after photodynamic therapy and they finally have an answer. Though they don't suggest that the rest of us try to replicate the results, it's good to understand the process.
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There's a Cancer Treatment That Gives People 'Night Vision', and We Finally Know Why