Thank you for this question, and I am sorry to hear that you have had such horrible symptoms for such a time. I recommend that you speak with your doctor
about this question. The eye does have a mucosal membrane that allows different molecules and even infection to pass through in some cases. So it is possible that something could have passed through one of your eyes and gone on to the rest of the body. Based on the symptoms that you have described, it is not clear that this is the case. Most of your symptoms are difficult to trace to a single event such as you describe. There are few infections that will result in this sort of symptoms complex, and there are not many chemicals that I am aware of that would result in these symptoms in such a low dose. One common thing for some people is to have something small initiate a migraine
or other headache
that then persists for some time and causes symptoms of its own. These generally can be identified if treating the migraine helps to make the symptoms improve. As you seem to have had these symptoms for some time, it is important to speak with your doctor. Again, please speak with your doctor about this question.