It is used to prevent and treat acute attacks of malaria. It is also used to treat discoid or systemic lupus erythematosus and rheumatoid arthritis in patients whose symptoms have not improved with other treatments. How to quit taking hydroxychloroquine Plaquenil and alcohol use Determination of hydroxychloroquine toxicity Plaquenil toxicity. In general, an abnormal mfERG indicates that the foveal cones and/or bipolar cell layers are dysfunctional and the source of vision loss. Unlike the focal ERG, mfERG also indicates the precise distribution of the retinal dysfunction. The antimalarial medications chloroquine and hydroxychloroquine are also prescribed to treat discoid or systemic lupus erythematosus, rheumatoid arthritis, dermatologic inflammation, and Sjögren syndrome, which together affect an estimated 7 million Americans. Hydroxychloroquine is in a class of drugs called antimalarials. It is used to prevent and treat acute attacks of malaria. It is also used to treat discoid or systemic lupus erythematosus and rheumatoid arthritis in patients whose symptoms have not improved with other treatments. Hydroxychloroquine comes as a tablet to take by mouth. This medication is sometimes prescribed for other uses; ask your doctor or pharmacist for more information. Hydroxychloroquine erg Retinal Physician - Hydroxychloroquine Maculopathy An Update., Retina Today - Evaluating Hydroxychloroquine Toxicity With. Hydroxychloroquine prescribing information pdfPlaquenil dental concerns Multifocal ERG Guiding Therapy in a Case of Hydroxychloroquine Premaculopathy. Article PDF Available November 2015. Pattern ERG-VEP recording of the patient, showing normal values of. PDF Multifocal ERG Guiding Therapy in a Case of.. Hydroxychloroquine MedlinePlus Drug Information. Chloroquine and Hydroxychloroquine Toxicity Workup Approach.. Hydroxychloroquine is a well-tolerated medication for various rheumatologic and dermatologic conditions. Its main side effects are gastrointestinal upset, skin rash, headache, and ocular toxicity. Within the eye, hydroxychloroquine can adversely impact the cornea, ciliary body, and retina 1 Disease Entity One such commonly used medication for dermatologic and rheumatologic inflammatory conditions is hydroxychloroquine Plaquenil, a chloroquine derivative. It is used to treat many diseases including malaria, rheumatoid arthritis and systemic lupus erythematosus. Multifocal ERG ring ratios reveal retinal toxicity in a surprisingly large fraction of patients taking hydroxychloroquine who are referred for evaluation and have no previous history of eye disease. We find the use of ring ratios to be a sensitive measure of dysfunction in ocular hydroxychloroquine toxicity.