Plaquenil is less toxic than chloroquine; however, long-term use of either drug can result in macular toxicity, leading to devastating irreversible vision loss. The mechanism of this toxicity is not clearly understood, though it is believed that the drug molecule binds to melanin in the retinal pigment epithelium (RPE). Chloroquine vivax Does plaquenil help with scarring alopecia 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 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. Figure 3 A sub-retinal hemorrhage seen in a wet age-related macular degeneration patient. Subretinal and sub-RPE hemorrhages tend to resolve quite slowly, and since they're in close proximity to the outer retina, they may be associated with functional and/or structural changes at the level of the photoreceptors. Binding of the drug to melanin in the RPE contributes to, or prolongs, its toxic effects. This leads to disruption and damage to the photoreceptors and outer nuclear and plexiform layer, sparing the foveal center and resulting in the “bull’s eye” appearance in the late stage of the disease. Retinal toxicity and plaquenil aafp Diagnosis and Management of Rheumatoid Arthritis., Despite Plaquenil dosing recommendations, retinal toxicity. Plaquenil skin rash side effectsDelayed side effects plaquenilPlaquenil fkWhy can't i take the generic for plaquenilPlaquenil free drug Hydroxychloroquine Plaquenil, Sanofi-Aventis remains widely used in the treatment of various rheumatologic disorders. A small percentage of patients exposed to hydroxychloroquine will develop irreversible, and potentially progressive, retinal toxicity for which no effective treatment exists. Retinal Physician - New Screening Guidelines for.. Optometric Management - The Many Faces of a Retinal Hemorrhage. Has anyone experienced plaquenil toxicity with damage to eyes?. Hydroxychloroquine sulfate HCQ, Plaquenil is an analogue of chloroquine CQ, an antimalarial agent, used for the treatment of systemic lupus erythematosus, rheumatoid arthritis and other autoimmune disorders. Its use has been associated with severe retinal toxicity, requiring a discontinuation of therapy. 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. Hydroxychloroquine Plaquenil. The actual incidence of retinal toxicity from hydroxychloroquine is difficult to pin down because there is usually a long time between being started on the drug and the start of any identifiable retinal toxicity. The overall rate of probable retinal toxicity is in the range of 1 of every 200 people treated.