There is a drug that can cause blindness that is used to treat refractory rheumatoid arthritis, lupus erythematosus and susceptible malaria. It's called hydroxychloroquine and Plaquenil, generic and trade names, respectively. Patients taking it need ophthalmologic, i.e. eye, exams every six months, not lawsuits. Without it some patients' medical conditions become worse, or they have to take more expensive or more toxic medicines.
Lawsuits based and won on junk science, ignorant juries and self appointed medical experts should go the way of the Do Do bird.
Trying to equate a medication with known side-effects with one that wasn't know to cause them is kindof a red hering arguement bud.