Hydroxychloroquine (Plaquenil) was originally used to treat malaria and is now commonly used to treat rheumatological and dermatological diseases. It is frequently used for rheumatoid arthritis (RA) and Lupus and is often very effective in mitigating the joint and arthritic symptoms these diseases can cause. One of the most significant side effects of the drug is its possibility of causing eye problems resulting in blurred or decreased vision. The most common issue is damage to the retina. It can impair  color vision or damage the retinal cells, particularly in the area right around th...