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  • Title: Comparison of Mydriatic Provocative and Dark Room Prone Provocative Tests for Anterior Chamber Angle Configuration.
    Author: Yamada R, Hirose F, Matsuki T, Kameda T, Kurimoto Y.
    Journal: J Glaucoma; 2016 Jun; 25(6):482-6. PubMed ID: 26317479.
    Abstract:
    PURPOSE: To investigate the relationship between angle configuration and diagnostic provocation tests such as the mydriatic provocative test (MPT) and the dark room prone provocative test (DRPPT). MATERIALS AND METHODS: Seventy eyes of 70 consecutive patients with primary angle closure suspect, primary angle closure, or primary angle closure glaucoma were included. The anterior chamber depth, angle opening distance 500, trabecular-iris space area 500, and iris thickness (IT) were quantitatively determined by anterior segment optical coherence tomography, and the MPT and DRPPT were used to investigate intraocular pressure variations. RESULTS: Seven eyes were positive and 3 eyes were suspected positive, using the MPT, whereas 10 eyes were positive and 7 eyes were suspected positive using the DRPPT. The anterior chamber depth and angle opening distance 500 of the positive and suspected positive groups (positive group), using the MPT, were significantly less than those of the negative group (P=0.013, P=0.013, respectively). IT of the positive group, using the MPT, was significantly greater than the negative group, using the same test (P=0.003). The trabecular-iris space area 500 of the positive group was significantly less than the negative group, using both the MPT (P<0.001) and the DRPPT (P=0.004). CONCLUSIONS: Eyes from the positive group, using the MPT, contained a shallower anterior chamber, narrower angle, and greater IT than those from the negative group. These results suggested that the MPT results better correlated with the anterior chamber angle configuration in eyes with primary angle closure, than the results using the DRPPT.
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