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Intraocular pressure variability in patients who reached target intraocular pressure
  1. F K Malerbi,
  2. M Hatanaka,
  3. R M Vessani,
  4. R Susanna, Jr
  1. Glaucoma Department, University of Sao Paulo School of Medicine, Sao Paulo, Brazil
  1. Correspondence to: Fernando Korn Malerbi Glaucoma Department, University of Sao Paulo School of Medicine, Sao Paulo, Brazil, Rua Capote Valente 171 Ap 122, São Paulo, SP, Brazil, 05409-000; marcelohatanakauol.com.br

Abstract

Aim: To assess the intraocular pressure (IOP) variability in patients with primary open angle glaucoma (POAG) under clinical treatment who reached an established target pressure based on isolated office readings.

Methods: Retrospective analysis of 65 eyes from 65 POAG patients under clinical therapy who submitted to modified diurnal tension curve (mDTC) (measurements at every 3 hours between 8 am and 5 pm) followed by a water drinking test (WDT). All subjects had established target IOP ⩽15 mm Hg at 11 am or 2 pm. IOP variability during mDTC or WDT was evaluated.

Results: mDTC revealed IOP measurements ⩾17 mm Hg in 16 of 65 eyes (24.6%). Nine eyes (13.8%) presented values ⩾18 mm Hg. The highest IOP detected by mDTC was 20 mm Hg in one patient (1.5%). WDT demonstrated IOP values ⩾17 mm Hg in 32 of 65 eyes (49.2%). 22 eyes (33.8%) presented values ⩾18 mm Hg after water ingestion. Moreover, IOP levels ⩾20 mm Hg were observed in 14 eyes (21.5%).

Conclusion: A great percentage of POAG patients undergoing clinical treatment and with IOP control based on single office measurement present significantly higher IOP measurements when performing mDTC and, especially, the WDT.

  • mDTC, modified diurnal tension curve
  • POAG, primary open angle glaucoma
  • WDT, water drinking test
  • glaucoma
  • intraocular pressure
  • mDTC, modified diurnal tension curve
  • POAG, primary open angle glaucoma
  • WDT, water drinking test
  • glaucoma
  • intraocular pressure
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