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. Chloroquine autophagy lc3 Affects of stopping plaquenil Chloroquine treatment malaria Jan 05, 2020 Hydroxychloroquine Plaquenil and chloroquine cause ocular toxicity to various parts of the eye such as the cornea, ciliary body, and retina. Chloroquine can also induce cataract formation; however, no reports of hydroxychloroquine and cataract have been reported 1. 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. Plaquenil Hydroxychloroquine Toxicity Condition/keywords plaquenil toxicity Imaging device Optical coherence tomography system Autofluorescence Description 68-year-old female with 15 year history of plaquenil hydroxychloroquine use. Related files 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 toxicity autofluorescence In Hydroxychloroquine Toxicity, Multimodal Imaging in Plaquenil Toxicity Chloroquine phosphate resistant malariaPhototoxic reaction to plaquenilWhat is in plaquenilPlaquenil withdrawal symptoms Ultra-widefield fundus autofluorescence images placed in order of severity in the eyes with hydroxychloroquine retinopathy with a parafoveal dominance pattern. Retinopathy varies from ring-shaped parafoveal hyperautofluorescence to round macular hypoautofluorescence and finally to bull's eye maculopathy with peripheral involvement rightmost. Evaluation of Hydroxychloroquine Retinopathy Using Ultra.. Plaquenil Hydroxychloroquine Toxicity Autofluorescence.. The Risk of Retinal Toxicity with Plaquenil. Recommendations on Screening for Chloroquine and Hydroxychloroquine Retinopathy Retinal toxicity from chloroquine CQ and its analogue, hydroxychloroquine HCQ, has been recognized for many years. Chloroquine toxicity remains a problem in many parts of the world, but is seen less frequently in the United States where the drug largely has been replaced by HCQ. In early toxicity, 75 % developed progression after drug cessation, including disruption of the parafoveal EZ and retinal pigment epithelium and thinning of the ONL. Eyes with obvious toxicity had greater inferior outer ring thinning 12 months after drug cessation compared to early toxicity p = 0.002, 95 % CI −2 to −8 μm. To detect chloroquine toxicity, the American Academy of Ophthalmology recommends performing fundus examinations, 10-2 automated visual fields, and at least one objective test multifocal electroretinography mfERG, fundus autofluorescence imaging, or spectraldomain optical coherence tomography SD-OCT. 1 By contrast, Amsler grid testing.