doctors and scientists dont give credence to anecdotes, as they are almost always wrong. very often its the placebo effect- the person taking the medicine is convinced of its power to do something, so it actually does it. or, very often there is coincidence. everyone has always heard about someone else who experienced a certain result from a certain thing, but thats not evidence.
in order to know whats really going on, one must do randomized, double-blind, placebo-controlled studies, which cost millions of dollars. if all we needed were anecdotes, the big pharm companies and the n.i.h. could save billions and not bother doing all these complicated multi-year expensive drug studies to prove they work. all they have to state is that it worked for you or many others like you.

your “test” is nothing of the kind. you did not do a legitimate test. when i see a patient with early cataract, i typically do not tell the patient, and i often neglect to write it down, as it’s clinically irrelevant. also, some early cataract has been shown to be reversible, or it can wax and wane for a while. the fact that it disappeared when you took the drop means absolutely nothing and is far from senseless. its science.

here’s an example of the power of real testing- for decades, doctors treated kids with ear infections with antibiotics. but guess what? a major study came out 2 years ago which proved that those antibiotics accomplish nothing! it was stunning. there was no difference between 2 groups of kids, where 1 group got antibiotics, and the other did not. yet we all know of kids who get better with antibiotics! how is that possible? simple- they would have gotten better anyway.