Effects of early postfiltration ocular hypotony on visual acuity, long-term intraocular pressure control, and posterior segment morphology

Journal of Glaucoma
O SchwennN Pfeiffer

Abstract

To determine whether hypotony after filtration surgery has any influence on visual acuity and intraocular pressure (IOP) lowering. We prospectively investigated 43 eyes of 43 patients undergoing trabeculectomy without the use of antimetabolites for 12 months. The lowest postoperative IOP valued 4.9 +/- 3.6 mm Hg (range, 0-14 mm Hg). It correlated statistically significant with the IOP 6 weeks (P = 0.016), 6 months (P = 0.009), and 1 year after surgery (P = 0.027). Eyes with a deterioration of visual acuity 6 weeks after surgery had undergone a stronger postoperative hypotony (correlation with lowest postoperative IOP, P = 0.035). The mean period with an IOP less than 5 mm Hg was 3.5 +/- 8.0 days, and the mean period with an IOP less than 10 mm Hg lasted 45.4 +/- 68.8 days (range, 0-276 days). A hypotony score based on IOP and duration of hypotony was introduced. A correlation was detected between morphologic signs of hypotony, such as tiny retinal folds, at the 6-month follow-up and the duration of hypotony (P = 0.029) and hypotony score (P = 0.001). Hypotony after filtration surgery may decrease visual acuity in the early postoperative period. Conversely, early postoperative hypotony correlated with better long term IOP contro...Continue Reading

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Citations

Apr 7, 2005·BMC Ophthalmology·Sarah E BensonScott G Fraser
Oct 16, 2016·Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft·A G M JünemannB Hohberger
Apr 24, 2001·Journal of Glaucoma·E M Van Buskirk
May 20, 2021·International Ophthalmology·Neşe AlagözTekin Yasar

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