Allahdady, Fatemeh, et al. “Comparison of Visual Evoked Potential and Electro-Oculogram Tests in Early Detection of Hydroxychloroquine Retinal Toxicity”. Journal of Ophthalmic and Optometric Sciences, vol. 1, no. 1, Sept. 2016, pp. 19-26, doi:10.22037/joos.v1i1.14315.