病毒性角膜炎由感冒、疟疾或其他热性病原引起,有畏光,在放大镜下或让患者于暗室内斜照法下观看,病变处与健康角膜界限较模糊,为元形点状,角膜知觉减退。而角膜翳,为既往有眼疾或外伤史愈后所致,因此无畏光,在放大镜下或令患者于暗室内斜照法下观察,角膜翳与健康角膜境界清晰,角膜知觉正常。 Viral keratitis caused by a cold, malaria or other thermal pathogen, photophobia, under the magnifying glass or in patients with dark room under the oblique view of the law, the lesion and healthy cornea more fuzzy boundaries for the shape of dots, the cornea Perception diminished. The cornea, for the past history of eye disease or trauma due to fear of light, under the magnifying glass or in patients with dark room under the oblique observation method, the cornea and healthy cornea clear boundary, normal corneal sensation.