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Four years ago I faced a problem with my left eye:
I suddenly lost the 30% of my vision in one day, because of “optical neuritis”.
After a specific treatment I managed to see better, but the doctor says that sometimes I lose the ability to distinguish red color from blue.
I cannot conceive this fact in everyday life but only in specific medical tests.

*This self-portrait shot has been taken especially for the bluish portrait challenge
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