Additionally, another exception occurred while executing the custom error page for the first exception. : September 14, 2016 Chief complaint: Whirling and flashing lights A 57-year-old female presented to the Ophthalmology clinic at UIHC complaining bilateral central photopsias for the past two years. Home remedies plaquenil hyperpigmentation Plaquenil against scabies Can plaquenil cause decreased kidney function Chloroquine dose in pediatrics Hydroxychloroquine HCQ, brand name Plaquenil is commonly used for the long-term 2 management of a variety of chronic rheumatic diseases including systemic lupus erythematosus 3 and rheumatoid arthritis. A range of potential toxicities related to HCQ use have been reported Electroretinography ERG In 2015, Tzekov and Madow 8 stated that birdshot chorioretinopathy BSCR is a rare form of autoimmune posterior uveitis that can affect the visual function and, if left untreated, can lead to sight-threatening complications and loss of central vision. Multifocal ERG has a consistent topographic distribution in the normal population. However, the summed amplitude of multifocal ERG can vary significantly among normal subjects. Therefore, topographic abnormalities via a three-dimensional distribution map are useful for the interpretation of multifocal ERG in diseased patients. She was previously treated with hydroxychloroquine (Plaquenil) 200mg bid (6.5mg/kg) for 10 years, which was stopped one year prior to presentation. She suffered from Sjogren syndrome and inflammatory arthritis and was currently treated with prednisone and methotrexate. Multifocal erg for plaquenil Rx Side Effects New Plaquenil Guidelines and More - American Academy., Electroretinography ERG, Multi-focal Electroretinography mfERG And. Plaquenil malaria dosageHow do you pronounce hydroxychloroquineChloroquine and proguanil breastfeedingPlaquenil teethWho manufactures plaquenil The multifocal ERG is used to record separate responses for different retinal locations. The international body concerned with the clinical use and standardization of the ERG, EOG, and VEP is the International Society for the Clinical Electrophysiology of Vision ISCEV. Other uses Electroretinography - Wikipedia. Multifocal ERG in Practice -. Multimodal Imaging in Plaquenil Toxicity. Purpose To evaluate the utility of ring ratios in detecting hydroxychloroquine HCQ related retinal toxicity using the 103-hexagon multifocal electroretinogram mfERG. Design Retrospective cross-sectional study. Methods 23 patients taking HCQ were consecutively evaluated for retinal toxicity and divided into those without HCQ-non-toxic group and with documented visual field loss HCQ-toxic. Multifocal ERGs better quantify retinal toxicity than full-field ERGs. Below are mfERGs of several patients with Plaquenil toxicity. Plaquenil first affects small areas between 5-15 degrees from fovea eventually progressing to produce a ring scotoma. Figs. 47 and 48. Fig. 47. The multifocal ERG mfERG simultaneously measures local retinal responses from up to 250 retinal locations within the central 30 degrees mapped topographically. This new technology was developed by Erich Sutter in the early 1990s and involves powerful computers and high –intensity display monitors.