Hi Nonna, sorry you're having this problem.
I've wondered the same thing. But my eyesight has been changing more ever since I tried Plaquenil. I was only on it for six months and it wasn't a high dosage, so I don't know. I've been wondering if it's the disease or the medication. I've always had slow changes and sometimes none at all at my exams. Then after the plaq, lots of changes.
I found this link... http://www.lupus.org/webmodules/weba...380&zoneid=526