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 dile Eye damage from plaquenil Hydroxychloroquine does Plaquenil and quinicrine not working anymore for lupus Mechanism of HCQ Toxicity. The mechanism of hydroxychloroquine retinal toxicity has yet to be fully elucidated. Studies have shown that the drug affects the metabolism of retinal cells and also binds to melanin in the RPE, which could explain the persistent toxicity after discontinuation of the medication. Its use has been associated with severe retinal toxicity, requiring a discontinuation of therapy. Because it presents potential secondary effects including irreversible maculopathy, knowledge of incidence, risk factors, drug toxicity and protocol screening of the patients it represents important data for the ophthalmologists. When allowed to advance, hydroxychloroquine retinal toxicity leads to loss of up to three visual functions acuity, peripheral vision and night vision. Signs. On examination, a telltale sign of hydroxychloroquine toxicity is a bilateral change in the retinal pigment epithelium of the macula that gives the commonly described appearance of a bull’s-eye. 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. Eye retinal toxicity dosage hydroxychloroquine Hydroxchloroquine and Chloroquine Toxicity - Eye Lessons, Retinal toxicity associated with chronic exposure to hydroxychloroquine. Plaquenil does it affect the eyesightPlaquenil dangersEileen white chloroquine In some people, Plaquenil can cause a condition called hydroxychloroquine retinopathy, often referred to as bulls-eye maculopathy. The condition sometimes resembles a target, or bulls-eye ring, on the retina surrounding the macula. Plaquenil Side Effects on Your Eyes and Vision. Hydroxychloroquine-Induced Retinal Toxicity - American.. The Risk of Retinal Toxicity with Plaquenil - Sjogren's. Retinal toxicity is a very rare side effect of the hydroxychloroquine therapy, but when it has occurred, vision loss may be permanent and may progress even years after the cessation of medication. Patients would be examined every 3 months, then annually, until they are stabled. Ocular Surgery News The American Academy of Ophthalmology has published several dosing and screening recommendations for hydroxychloroquine to avoid potential retinal toxicity, yet some patients. 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.