Asuka Takeyama1,2, Yutaka Imamura3, Masaki Shibata3, Yuko Komiya3, Goji Tomita4, Masahiro Ishida3. 1. Department of Ophthalmology, Teikyo University School of Medicine, University Hospital Mizonokuchi, 5-1-1, Futago, Takatsu-ku, Kawasaki, Kanagawa, Japan, 213-8507. asucafejp@yahoo.co.jp. 2. Department of Ophthalmology, Toho University Ohashi Medical Center, Tokyo, Japan. asucafejp@yahoo.co.jp. 3. Department of Ophthalmology, Teikyo University School of Medicine, University Hospital Mizonokuchi, 5-1-1, Futago, Takatsu-ku, Kawasaki, Kanagawa, Japan, 213-8507. 4. Department of Ophthalmology, Toho University Ohashi Medical Center, Tokyo, Japan.
Abstract
PURPOSE: To determine the relationship between the subfoveal choroidal thickness (SCT) and intraocular pressure (IOP) following 25-gauge (25G) and 23-gauge (23G) vitrectomy for idiopathic epiretinal membrane (ERM). STUDY DESIGN: Retrospective, consecutive, interventional case series. METHODS: Sixty-two patients undergoing 25G vitrectomy and 56 patients undergoing 23G vitrectomy for ERM participated. SCT was measured using enhanced depth imaging optical coherence tomography and IOP were measured both at baseline and postoperatively. RESULTS: In both groups, the IOPs on day one and one week after surgery were significantly lower than at baseline (P < 0.001 for both). The rates of changes of IOP were significantly greater in 23G compared to 25G on day one (P = 0.026). In 23G the SCTs on day one and one week after surgery were significantly thicker (P < 0.001) than baseline. The rates of changes in SCT between baseline and day one negatively correlated with those of IOP in 23G (r = -0.559, P < 0.001) but no correlation was observed with 25G (r = -0.129, P = 0.316). CONCLUSION: Choroidal thickness increases soon after 23G vitrectomy for ERM which is probably due to the transient hypotony, however, early SCT change does not appear in 25G vitrectomy. Twenty-five-gauge vitrectomy may have an advantage in minimizing postoperative choroidal changes.
PURPOSE: To determine the relationship between the subfoveal choroidal thickness (SCT) and intraocular pressure (IOP) following 25-gauge (25G) and 23-gauge (23G) vitrectomy for idiopathic epiretinal membrane (ERM). STUDY DESIGN: Retrospective, consecutive, interventional case series. METHODS: Sixty-two patients undergoing 25G vitrectomy and 56 patients undergoing 23G vitrectomy for ERM participated. SCT was measured using enhanced depth imaging optical coherence tomography and IOP were measured both at baseline and postoperatively. RESULTS: In both groups, the IOPs on day one and one week after surgery were significantly lower than at baseline (P < 0.001 for both). The rates of changes of IOP were significantly greater in 23G compared to 25G on day one (P = 0.026). In 23G the SCTs on day one and one week after surgery were significantly thicker (P < 0.001) than baseline. The rates of changes in SCT between baseline and day one negatively correlated with those of IOP in 23G (r = -0.559, P < 0.001) but no correlation was observed with 25G (r = -0.129, P = 0.316). CONCLUSION:Choroidal thickness increases soon after 23G vitrectomy for ERM which is probably due to the transient hypotony, however, early SCT change does not appear in 25G vitrectomy. Twenty-five-gauge vitrectomy may have an advantage in minimizing postoperative choroidal changes.
Authors: Omesh P I Gupta; Eric D Weichel; Carl D Regillo; Mitchell S Fineman; Richard S Kaiser; Allen C Ho; J Arch McNamara; James E Vander Journal: Ophthalmic Surg Lasers Imaging Date: 2007 Jul-Aug
Authors: Jamin S Brown; D Ian Flitcroft; Gui-shuang Ying; Ellie L Francis; Gregor F Schmid; Graham E Quinn; Richard A Stone Journal: Invest Ophthalmol Vis Sci Date: 2008-08-21 Impact factor: 4.799