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本文汇总1989～1993年沙眼监测资料，并针对有关问题作一简述。1监测对象为全市城区12所中学、13所小学约25000名中小学生，采用简化诊断标准，诊断和记录分为；无沙（一）；结膜表面光滑透明、血管清楚；有沙（＋）：结膜表面粗糙不平，血管模糊不清、乳头滤泡增生；如发现灰
This article summarizes trachoma monitoring data from 1989 to 1993 and gives a brief account of the related problems. 1 The monitoring target is 12 secondary schools in the urban area of the city and about 25000 primary and secondary students in 13 primary schools adopt the simplified diagnostic criteria and the diagnosis and recording are divided into: no sand (a); the conjunctiva surface is smooth and transparent with clear blood vessels; Conjunctival surface roughness, blurred blood vessels, nipple follicular hyperplasia; found gray