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. Hydroxychloroquine dyschromia Hydrocloroquine plaquenil Plaquenil Toxicity - Bulls Eye Maculopathy 575 views 70-year-old woman with systemic Lupus erythematosus and clotting problems. She was on the Plaquenil for about eight years and then off the Plaquenil for the last eight years because she developed macular toxicity. Although her vision was hazy, it was stable. Discussion. A risk factor for Plaquenil hydroxychloroquine retinotoxicity is a daily dose that exceeds 5.0 mg of drug per kg of body weight. The tool on the right simply calculates this threshold based on a patient’s real body weight. It’s important to understand that the daily dose is only one risk factor for plaquenil retinotoxicity. Apr 20, 2011 Although the incidence of macular toxicity is infrequent with Plaquenil use at a dosage of 200mg or 400mg q.d. its visual impact can be devastating. 2,3. The associated classic retinal toxicity is described as a bull’s eye maculopathy ring of depigmented retinal pigment epithelium that spares the foveal area. 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. Plaquenil maculopathy retina Hydroxychloroquine-Induced Retinal Toxicity - American., Plaquenil Risk Calculators Can plaquenil cause edema Chloroquine retinopathy, is a form of toxic retinopathy damage of the retina caused by the drugs chloroquine or hydroxychloroquine, which are sometimes used in the treatment of autoimmune disorders such as rheumatoid arthritis and systemic lupus erythematosus. This eye toxicity limits long-term use of the drugs. Chloroquine retinopathy - Wikipedia. New Plaquenil Guidelines. The Risk of Retinal Toxicity with Plaquenil. Nov 01, 2007 Retinal Physician® Therapeutic and Surgical Treatment of the Posterior Segment delivers in-depth coverage of the latest advances in AMD, diabetic retinopathy, macular edema, retinal vein occlusion as well as surgical intervention in posterior segment care. It reaches both retinal specialists and general ophthalmologists with practical insight. Plaquenil Toxicity is due to its affinity for melanin-containing structures in body. With prolonged usage, metabolites of drug accumulate in the retina. The American Academy of Ophthalmology has published several dosing and screening recommendations for hydroxychloroquine to avoid potential retinal toxicity, yet some patients still experience permanent vision loss resulting from hydroxychloroquine retinopathy due to improper dosing of the drug and improper screening.