It's used to treat and prevent malaria infection, and to reduce symptoms and progression of autoimmune diseases such as lupus, rheumatoid arthritis, and others. Malaria is spread by mosquitoes, which transmit the parasites that cause the infection, usually in tropical and subtropical parts of the world. Chloroquine cst Plaquenil zon Adie's pupil. Adie's pupil is a rare disorder usually affecting only one eye, causing blurry or distorted vision in the eye. Plague. Plague is a rare but deadly bacterial infection causing fever, vomiting, seizures, organ failure, and more. Cyanide poisoning. The symptoms of cyanide poisoning include headache, weakness, confusion, nausea, and. Fundus changes on biomicroscopy, including bull's eye maculopathy, are indicative of fairly advanced hydroxychloroquine-induced retinal toxicity which is largely irreversible despite cessation of the medication. When the pupil becomes small it is said to be constricted. As the body ages, the pupil becomes naturally smaller and does not open as wide in dim light. Aside from constricted pupils, this condition's symptoms include decreased sweating on the affected side of the face, drooping eyelid and sinking of the eyeball into the face. For example, it may be combined with an antibiotic to treat chronic Q-fever, which humans usually catch from farm animals or raw milk. Plaquenil is used to treat other types of infections too. Plaquenil pupil change Protecting your eyesight when taking Plaquenil Lupus., Hydroxychloroquine Plaquenil Toxicity and Recommendations. Plaquenil immunosuppression Note This document contains side effect information about hydroxychloroquine. Some of the dosage forms listed on this page may not apply to the brand name Plaquenil. For the Consumer. Applies to hydroxychloroquine oral tablet. Along with its needed effects, hydroxychloroquine the active ingredient contained in Plaquenil may cause some unwanted effects. Plaquenil Side Effects Common, Severe, Long Term -. What Causes Small Pupils? Healthfully. Common and Rare Side Effects for Plaquenil Oral. The reason I was inspired to spotlight lupus and the eyes is because I was recently diagnosed with iritis. Having had SLE for 25 years now, and having been on plaquenil for 15 years, I have never had eye involvement until now. Symptoms include drooping eyelids, uneven pupil size and the inability to sweat on that side of the face. When one pupil is much larger than then the other, eye color looks different. In very rare cases, Horner's Syndrome occurs in newborns or infants. Horner's syndrome can also cause a change in eye color due to depigmentation of the iris. Hydroxychloroquine Plaquenil is used to treat malaria, lupus, and rheumatoid arthritis. Learn about side effects, warnings, dosage, and more.