It is generally well tolerated, but retinopathy is a concern. Retinopathy is rare, but is sight threatening, generally irreversible and may progress even after cessation of therapy. Although a number of risk factors have been proposed (such as duration of therapy and cumulative dose), the many exceptions (e.g. Does plaquenil change ph Hydroxychloroquine sulfate weight gain Efectos secundarios de plaquenil 200 mg In 2013, Roque published a review on “Chloroquine and Hydroxychloroquine Toxicity” which listed full-field ERG or electro-oculogram as one of the ancillary tests. 21 The article stated although not recommended for toxicity screening because of sensitivity, specificity and reliability issues, it may be used in diagnosing toxicity. Cein angiography, full-field ERG, and electro-oculogram are not considered to be helpful.1-3 mfERG is a sensitive, objective, and reproducible test for detecting hydroxy-chloroquine toxicity. Several drugs taken in high doses or for long periods of time can cause retinal degeneration with pigmentary changes. Plaquenil is effective for Lupus patients, as well as people with UCTD described to me by a rheumatologist as "Lupus-like" or "Lupus-lite" or "mild Lupus". So it's very possible to be on Plaquenil without having a formal Lupus diagnosis. To get a Lupus diganosis you need to have 4 or more of 11 Lupus criteria, within a 5 year period. Novel technologies such as optical coherence tomography (OCT), fundus autofluorescence (FAF) and multifocal electroretinogram (mf ERG) may provide the earliest structural and functional evidence of toxicity in these stages. Retinopathy on low-dose HCQ, or no retinopathy after a very large cumulative dose of HCQ) highlight our limited understanding of the disease process. Plaquenil fullfield erg severe Early Plaquenil Toxicity Detected without Bull’s Eye Maculopathy, Evaluating Hydroxychloroquine Toxicity With Multifocal Electroretinography What are the side effects of the drug plaquenilChloroquine vs mefloquinePlaquenil alopecia areata alopecia totalisPlaquenil detoxing The better substitute for chloroquine, Plaquenil, can also have macular effects noticeable by multifocal electroretinograms. Hydroxychloroquine Plaquenil is usually less disruptive to the retina than chloroquine, but ERG changes can still occur. Vigabatrin, a pediatric seizure medication, can be toxic to the retina. Attenuation of full-field. Erg eog - SlideShare. Plaquenil -. Webvision The Electroretinogram and the Electro-oculogram.. The most common tests to detect hydroxychloroquine toxicity have been visual acuity, visual fields Amsler grid, automated visual field, color vision testing, full-field electroretinography ERG, and multifocal electroretinography mfERG.6, 7 Because of the localized nature of the defects, mfERG seems to be better than the full-field ERG in. The full-field ERG Ganzfeld; ffERG measures the stimulation of the entire retina with a flashlight source under dark-adapted scotopic and light-adapted photopic types of retinal is useful in detecting disease with widespread generalized retinal dysfunction i.e. cancer associated retinopathy, toxic retinopathies, and cone. Because early toxicity changes can be revealed on SD-OCT, it is prudent to perform a baseline screening of patients taking Plaquenil. Multifocal ERG has the ability to detect early macular dysfunction, so it should be included as part of baseline screening. A maximum daily dose of Plaquenil of 5.0mg/kg real weight is recommended.