PURPOSE: To present the hypothesis that a visual field defect after pars plana vitrectomy for macular hole may be caused by dehydration injury to the nerve fiber layer during the fluid-air exchange. METHODS: In a consecutive nonrandomized series of 45 operations on 35 eyes of 34 patients with full-thickness macular hole, the surgical method was changed with postoperative visual field testing performed. RESULT: The incidence and location of the post-operative visual field defect was affected only by changing the location of the infusion cannula. CONCLUSION: Dehydration injury of the nerve fiber layer during the fluid-air exchange should be considered as a possible cause of visual field defect after pars plana vitrectomy for macular hole.
PURPOSE: To present the hypothesis that a visual field defect after pars plana vitrectomy for macular hole may be caused by dehydration injury to the nerve fiber layer during the fluid-air exchange. METHODS: In a consecutive nonrandomized series of 45 operations on 35 eyes of 34 patients with full-thickness macular hole, the surgical method was changed with postoperative visual field testing performed. RESULT: The incidence and location of the post-operative visual field defect was affected only by changing the location of the infusion cannula. CONCLUSION:Dehydration injury of the nerve fiber layer during the fluid-air exchange should be considered as a possible cause of visual field defect after pars plana vitrectomy for macular hole.
Authors: J Hillenkamp; P Saikia; F Gora; H G Sachs; C P Lohmann; J Roider; W Bäumler; V-P Gabel Journal: Br J Ophthalmol Date: 2005-04 Impact factor: 4.638
Authors: M Dimitri Bouwens; Floris de Jong; Paul Mulder; Jan C van Meurs Journal: Graefes Arch Clin Exp Ophthalmol Date: 2008-08-16 Impact factor: 3.117