Pattern of Retinopathy: Although the locus of toxic damage is parafoveal in many eyes, Asian patients often show an extramacular pattern of damage. Dose: We recommend a maximum daily HCQ use of 5.0 mg/kg real weight, which correlates better with risk than ideal weight. How does plaquenil treat ra Plaquenil to treat skin rash Current testing for Plaquenil toxicity may include Visual field testing to evaluate for missing spots near the center of the vision. Color photographs of the macula. Fluorescein angiography FA. Optical coherence tomography OCT. Fundus autofluorescence. Multifocal electroretinograms mf. Abstract. Background The American Academy of Ophthalmology recommendations on screening for chloroquine CQ and hydroxychloroquine HCQ retinopathy are revised in light of new information about the prevalence of toxicity, risk factors, fundus distribution, and effectiveness of screening tools. Testing for Chloroquine and Hydroxychloroquine Retinopathy. Introduction Although the exact mechanism by which chloroquine CQ and hydroxychloroquine HCQ - commonly known as Plaquenil induce retinal toxicity is not well understood, but it is recognized as a serious ophthalmologic concern because it is not treatable. 1 Guidelines from the American Academy of Ophthalmology AAO on screening. Risk of Toxicity: The risk of toxicity is dependent on daily dose and duration of use. There are no similar demographic data for CQ, but dose comparisons in older literature suggest using 2.3 mg/kg real weight. Oct testing in plaquenil macular toxicity Time Domain OCT in Hydroxychloroquine Plaquenil Toxicity., Recommendations on Screening for Chloroquine and. Plaquenil yeast infectionCan plaquenil cause anemia Plaquenil Toxicity Condition/keywords plaquenil toxicity, hydroxychloroquine toxicity Imaging device Optical coherence tomography system Description SD-OCT scan from a 44-year-old woman with bilateral plaquenil toxicity. There is damage visible in the outer retina in a perifoveal distribution. Related files Plaquenil Toxicity - Retina Image Bank. This is Why You Need Multifocal ERG if You Have Plaquenil.. Expanded spectral domain-OCT findings in the early detection.. Aug 01, 2009 After seeing MANY professionals including a neurologist, a retinal specialist, neuro-ophthalmologist, and undergoing MANY different tests, she was diagnosed with Plaquenil toxicity. She does have field of vision loss, mostly on things that are close up. She took Plaquenil for almost five years before having any symptoms. The American Academy of Ophthalmology has suggested guidelines in order to monitor patients on hydroxychloroquine therapy, recommending a baseline dilated fundus exam, automated macular perimetry and Amsler grid testing. 3 Patients should be monitored annually, as toxicity can be irreversible and even progress after drug cessation. Many systemic medications may cause retinal toxicity. 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.