Double vision. It is due to some irregularity in action of the muscles which move the eyeballs, in consequence of which the eyes are placed so that rays of light from one object do not fall upon corresponding parts of the two retinae, and two images are produced. It is a symptom of several nervous diseases, and often a temporary attack follows an injury to the eye, intoxication, or some febrile disease like DIPHTHERIA.... diplopia
n. the fourth stage in the first prophase of *meiosis, in which *crossing over occurs between the paired chromatids of homologous chromosomes, which then begin to separate.... diplotene
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