Clinical Studies of Color Vision With Gunkel's Chromagraph

Multichannel perimetric alterations in systemic lupus erythematosus treated with hydroxychloroquine

“…The pharmacological treatment of SLE can alter significantly the visual field and color vision 2 . Several authors have reported a slight increase of the color threshold (specially for yellow), 3 retinopathy induced by hydroxychloroquine intake generating slight changes in color vision and the presence of a paracentral scotoma, 4 and retinopathy induced by chloroquine intake 5 . Multichannel perimetry6, 7, 8 is a relatively new clinical tool that allows the clinician to measure the contrast sensitivity for the magno, parvo, and koniocellular pathways, with the possibility of detecting incipient alterations in each of these visual pathways that could be not detected in a conventional perimetric exam.…”