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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Four prism dioptre reflex test ： ウィキペディア英語版 Four prism dioptre reflex test The Four Prism Dioptre Reflex Test (also known as the 4 PRT, or 4 Prism Dioptre Base-out Test), is an objective, non-dissociative test used to prove the alignment of both eyes (i.e. the presence of binocular single vision) by assessing motor fusion.〔Frantz, K. A., Cotter, S. A., Wick, B. (1992). Re-evaluation of the four prism dioptre base-out test. Optometry and Vision Science, 69(10), pp. 777-786. ISSN: 1040-5488〕 Through the use of a 4 dioptre base out prism, diplopia is induced which is the driving force for the eyes to change fixation and therefore re-gain bifoveal fixation meaning, they overcome that amount of power. == Indications for use == This test is performed on patients suspected to have small angle deviations of less than 10 prism dioptres, a microtropia, that may or may not have been observed on cover test because of subtle eye movements. The test determines whether the patient has bifoveal fixation or monofixation despite their eyes seeming straight.〔Pavan-Langston, D. (2008). Manual of ocular diagnosis and therapy. Philadelphia: Wolters Kluwer Health/Lippincott Williams & Wilkins. ISBN 0781765129〕 On the cover component of cover test a small manifest deviation may be documented, however the patient passes the Worth's Four Lights Test or Bagolini Striated Glasses Test, indicating binocular single vision, but fails a bifoveal test such as the Lang I/II. The 4 PRT therefore confirms the presence of a microtropia whether it be with identity (i.e. with eccentric viewing) or without identity (i.e. extension of Panum’s fusion area). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Four prism dioptre reflex test」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.