Most importantly, you help support continued development of this site. The majority of cases of retinotoxicity have occurred in patients that have had a cumulative dose exceeding 1000g of hydroxychloriquine (Plaquenil). This level is reached in about 7 years with the most common daily dose of Plaquenil, 400 mg/day (200 bid). Hydroxychloroquine plaquenil manufacturer Can plaquenil cause liver problems Aug 29, 2014 Several risk factors may increase the likelihood of retinal toxicity from Plaquenil such as, age of greater than 60 years, daily dose more than 6.5 mg/kg; use of the drug more than 5 years, obesity, preexisting retinal disease and, renal or liver failure. It is recognized, however, that retinal toxicity is occasionally seen in apparently low-risk individuals, inviting the possibility that there may be genetic or other as yet unrecognized risk factors or alternative causes of retinopathy, as these can be hard to distinguish clinically, especially in early stages. To cite this abstract in AMA style Worme A, Tamariz L, Palacio A, Nemeth Z, Farbman M. A Meta-Analysis of the Prevalence and Risk Factors for Retinal Toxicity in Rheumatologic Patients on Hydroxychloroquine Therapy abstract. It now solely uses real body weight (rather than ideal body weight) based on new recommendations from a 2014 study (1). Disclaimer: This tool is designed to help eye care professionals better understand the risk the of retinotoxicity from hydroxychloroquine. Please note: This calculator was modified in 9/2015. Hydroxychloroquine retinal toxicity risk factors My Take on New Ocular Screening Guidelines for Plaquenil RheumNow., Hydroxychloroquine-related retinal toxicity Rheumatology. What is plaquenil hydroxychloroquineChloroquine vivaxSjogrens flare plaquenil and itchingChloroquine methemoglobin Hydroxychloroquine has a lower risk of ocular toxicity, both corneal and retinal, compared with chloroquine. Smoking possibly reduces the efficacy of hydroxychloroquine, although studies have not usually confirmed this clinical impression. Hydroxychloroquine is considered safer than chloroquine during pregnancy and lactation. Hydroxychloroquine DermNet NZ. A Meta-Analysis of the Prevalence and Risk Factors for Retinal Toxicity.. Hydroxychloroquine retinopathy Eye. Additionally, patients who already have retinal and macular disease may masquerade or be subclinical simply because it can be very difficult to follow these patients with current testing strategies. 5 It is prudent to take notice of these additional risk factors carefully when screening patients. Plaquenil is a medication commonly used in patients that have Rheumatoid Arthritis RA, Systemic Lupus Erythematosus SLE, Sjogrens Syndrome, and other inflammatory and autoiummune disorders. What are risk factors for developing retinal toxicity from Plaquenil? Age older than 60; Daily dose of more than 6.5mg/kg Abstract. Background The American Academy of Ophthalmology recommendations on screening for chloroquine CQ and hydroxychloroquine HCQ retinopathy are revised in light of new information about the prevalence of toxicity, risk factors, fundus distribution, and effectiveness of screening tools.