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Abstract #82715 Published in IGR 20-4

Water-drinking Test and Pharmacologic Mydriasis as Provocative Tests in Primary Angle Closure Suspects

Razeghinejad R; Nowroozzadeh MH
Journal of ophthalmic & vision research 2019; 14: 267-274

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PURPOSE: To compare the water-drinking test (WDT) and pharmacologic mydriasis as provocative tests in patients with primary angle closure suspect (PACS). METHODS: This observational non-randomized comparative study evaluated changes in intraocular pressure (IOP) in 21 patients with PACS who underwent pharmacologic mydriasis and compared it with IOP changes in 26 patients given the WDT. Ocular biometric and anterior chamber parameters were also assessed. Tests were repeated on the same patient two weeks after performing laser peripheral iridotomy (LPI). RESULTS: The mean age standard deviation was 60 7 and 57 9 years in the mydriasis and WDT groups, respectively ( = 0.201). Before LPI, both provocative tests were associated with a significant increase in IOP (mydriasis: 15.1 3.1 to 16.6 3.5 mmHg, = 0.025; WDT: 16.2 2.8 to 18.5 3.3 mmHg, < 0.001). However, the IOP changes were not statistically different between groups ( = 0.102). After LPI, only the WDT group showed a continued significant IOP elevation after the test (mydriasis: 16.4 3.3 to 16.7 3.5 mmHg, = 0.569; WDT: 14.9 3.0 to 17.8 4.1 mmHg, < 0.001). The post-test IOP change was significantly greater in the WDT than in the mydriasis group (3.0 versus 0.3 mmHg, respectively; = 0.002). Step-wise multiple regression analysis verified the type of provocative test as the only independent factor affecting the post-test IOP change after LPI (regression coefficient: 2.664; = 0.002). CONCLUSION: Pharmacologic mydriasis and the WDT had similar IOP elevation before LPI, but after LPI, IOP elevation was much greater in the WDT group.

Full article

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Classification:

9.3.4 Primary angle closure suspect (Part of: 9 Clinical forms of glaucomas > 9.3 Primary angle closure glaucomas)
6.13 Provocative tests (Part of: 6 Clinical examination methods)

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