Xǔ Gang, Zhou Chao-Sheng, Cheng Chao, Perception Threshold Variations of Pain Area with Herpetic Ophthalmic Neuralgia, Journal of Ophthalmic Science, Volume 1, Issue 4, 2018, Pages 20-30, ISSN 2470-0436, https://doi.org/10.14302/issn.2470-0436.jos-17-1825. (https://openaccesspub.orgjos/article/686) Keywords: herpetic ophthalmicus neuralgia — subepidermal nerve fibers — current perception threshold — semmes-weinstein monofilament — noninvasive