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. Aralen phosphate Psoriasis from generic plaquenil Plaquenil muscle pain Plaquenil pronunciation Dr. Marmor said, “We also recommend use of objective tests such as spectral domain OCT, multifocal ERG and fundus autofluorescence.” He added that older time domain OCT units lack enough sensitivity for Plaquenil toxicity. Go by ideal, not real, weight. Dr. A limitation of the traditional global or full-field ERG is that the recording is a massed potential from the whole retina. Unless 20% or more of the retina is affected with a diseased state the ERGs are usually normal. Multi-focal electroretinography mfERG is an advanced form of ERG in that it produces images with higher resolution than ERG. Multifocal Electroretinography mfERG Vision Testing. Multifocal ERG has been recognized as an effective test in helping doctors to diagnose and manage diseases affecting the retina, most notably retinal toxicities. 1-3 This visual electrophysiology technique is a test of localized retinal function through quasi-simultaneous stimulation of different areas of the retina. 4 The American Academy. 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 plaquenil Evaluation of Hydroxychloroquine Retinopathy With Multifocal., Subject Electroretinography Chloroquine hemolytic transfusion reaction 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 Electroretinogram and Electro-oculogram Clinical.. Advanced Multifocal ERG mfERG Diopsys. Plaquenil Hydroxychloroquine Side Effects and Adverse Reactions. The multifocal electroretinogram mfERG technique allows local ERG responses to be recorded simultaneously from many regions of the retina. As in the case of the full-field ERG, the ganglion cells contribute relatively little to the response, which originates largely from the outer retina. Multifocal ERG This test looks at cells in the retina called rods and cones. The test measures how well these cells respond to light. It can find retinal damage from Plaquenil. Photos A special camera takes pictures of the retina. Photos show damaged areas as small spots of light. In the present day, the less toxic HCQ is used instead of chloroquine. The American Academy of Ophthalmology revised the screening guidelines in 2011 to include spectral domain-optical coherence tomography SD-OCT, fundus autofluorescence FAF, and multifocal ERG mfERG when available to assess the macula in patients taking HCQ. The new.