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  • Title: Clinical assessment of conjunctival and episcleral vessel tortuosity in juvenile dermatomyositis.
    Author: Young TA, Al-Mayouf S, Feldman BM, Levin AV.
    Journal: J AAPOS; 2002 Aug; 6(4):238-40. PubMed ID: 12185350.
    Abstract:
    PURPOSE: Conjunctival and episcleral vessel tortuosity are thought to be associated features of juvenile dermatomyositis. This study was conducted to determine the interobserver reliability of assessing normal and abnormal conjunctival and episcleral vessels from photographs of patients with and without juvenile dermatomyositis. METHODS: Color and red-free external ocular photographs of each eye of 28 children were assessed by 5 pediatric ophthalmologists from The Hospital for Sick Children. Fifteen of these pairs of photographs were of normal control eyes and 13 were from eyes of patients with juvenile dermatomyositis. On a standardized form each ophthalmologist was asked to determine whether both the conjunctival and episcleral vessels appeared normal or abnormal. Interobserver agreement was calculated by the weighted kappa statistic. The sensitivity and specificity of abnormal vessels for diagnosing juvenile dermatomyositis were also determined. RESULTS: Interobserver agreement for assessing conjunctival and episcleral vessels was 0.18 and -0.005, respectively. The average sensitivity and specificity of the evaluators for correctly assessing conjunctival vessels were 0.70 and 0.70, and for episcleral vessels, 0.67 and 0.47, respectively. CONCLUSIONS: There was low interobserver agreement in distinguishing between normal and abnormal eyes based on conjunctival and episcleral vessels. The sensitivity and specificity for identifying patients with juvenile dermatomyositis based on the appearance of vessels alone were relatively low. The appearance of conjunctival and episcleral vessels should be assessed in the context of other ocular and periocular findings of patients with juvenile dermatomyositis.
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