Last year we were learning about color vision defects and I asked my teacher after class about it. He said that he had never heard of that happening before. I took some intense color vision tests, one eye at a time, to see if there was a measurable difference between the two, and there was.
After seeing these results, my professor thought it could be the following:
1) Multiple sclerosis (not so likely because there haven't been episodes of it coming and going)
2) A brain lesion (also not likely because there haven't been any changes)
3) A difference in pigment in the back of my eye (most likely, but also most boring)
So my professor recommended having a complete, intense eye exam with the director of the clinic here at the college to rule anything major out.
In unrelated news, do you call it soda or pop?