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 cause bladder infections Hydroxychloroquine brand Thirty eyes with HCQ retinopathy were followed with SD-OCT after drug cessation. Findings before disruption of the parafoveal EZ included parafoveal outer nuclear layer ONL thinning, disruption of the parafoveal interdigitation zone, and reduced reflectivity of the parafoveal EZ. HCQ which has largely replaced CQ has been used widely for the treatment of systemic lupus erythematosus, rheumatoid. Aug 06, 2014 Hydroxychloroquine, sold under the brand name Plaquenil Sanofi-Aventis, is an antimalarial drug that has gained widespread use in treating various autoimmune diseases, including systemic lupus erythematosus and rheumatoid arthritis. 1 By some estimates, more than 150,000 patients are on long-term therapy with this medication in America alone. 2 Retinal toxicity associated with HCQ use is relatively rare, estimated at 1 percent after five years and rising with continued therapy. 3 However. 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. Hydroxychloroquine retinopathy oct Hydroxychloroquine retinopathy A review of imaging - NCBI, Update on hydroxychloroquine retinopathy Paulose RM. Chloroquine phosphate 250 mg tabletsHow much quinine is in hydroxychloroquineCutting plaquenil in half causing dosing errorsRetinae eye drops hydroxychloroquineIs plaquenil used to treat scleroderma Progressive Stages of Hydroxychloroquine Retinopathy Clinical images left to right fundus photography, spectral-domain optical coherence tomography OCT, and 10-2 white target visual fields pattern deviation plot and threshold plot. Levels of retinal toxicity top to bottom A, Normal fundus. Toxic Retinopathy With Hydroxychloroquine Therapy - JAMA. Multimodal Imaging in Plaquenil Toxicity. Recommendations on Screening for Chloroquine and.. Apr 20, 2011 8. Kellner S, Weinitz S, Kellner U. Spectral domain optical coherence tomography detects early stages of chloroquine retinopathy similar to multifocal electroretinography, fundus autofluorescence and near-infrared autofluorescence. Br J Ophthalmol. 2009 Nov;93111444-7. 9. Lai TY, Ngai JW, Chan WM, Lam DS. May 16, 2011 Hydroxychloroquine Plaquenil; HCQ has been an important and effective drug for the treatment of lupus erythematosus and related autoimmune and inflammatory diseases for half a century, although its potential to cause retinal damage continues to raise concern among rheumatologists and ophthalmologists. HCQ is widely used for the treatment of rheumatic diseases, particularly lupus and RA. 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. Damage may be subclinical.