Maho Shibata

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The mechanism of Terson’s syndrome is controversial. Here we report magnetic resonance (MR) imaging findings of Terson’s syndrome that may help clarify the mechanism responsible for vitreous hemorrhage. A 49-year-old man suffered from subarachnoid hemorrhage with bilateral intraocular hemorrhage. Fundus examination revealed sub-internal limiting membrane(More)
PURPOSE This paper compares the outcomes of the Ex-PRESS(®) Glaucoma Filtration Device (Alcon, Fort Worth, TX) implant observed in Japanese patients for 1 year with those of patients undergoing trabeculectomy. PATIENTS AND METHODS The subjects comprised ten eyes of ten cases with open-angle glaucoma for which filtration surgery using Ex-PRESS (P-50) was(More)
PURPOSE To investigate the hypoxia-induced death of rat retinal neurons and to determine whether P2X(7) activation is involved in this type of neuronal death. METHODS Cultured retinal neurons from fetal rats were used. The effects and time course of various degrees of hypoxia (1%-5% O(2)) in the death of retinal neurons, were examined. The effects of(More)
PURPOSE To investigate the involvement of glial cells in the autoregulation of optic nerve head (ONH) blood flow in response to elevated intraocular pressure (IOP). METHODS Rabbit eyes were treated with an intravitreal injection of l-2-aminoadipic acid (LAA), a gliotoxic compound. Twenty-four hours after the injection IOP was artificially elevated from a(More)
We investigated the effects of hypercholesterolemia on optic nerve head (ONH) blood flow, visual function, and retinal histology in a rabbit model. Hypercholesterolemia was induced in rabbits by feeding them a high cholesterol (1%) diet for 12 weeks. Changes in blood pressure, intraocular pressure (IOP), and ONH blood flow were monitored at 6 and 12 weeks(More)
PURPOSE To investigate the effects of fasudil, a Rho-associated coiled coil-forming protein kinase (ROCK) inhibitor, on normal or impaired optic nerve head (ONH) blood flow in a rabbit model. METHODS ONH blood flow was measured by laser speckle flowgraphy. Changes in ONH blood flow were examined during a continuous intravenous infusion of fasudil with and(More)
PURPOSE To determine whether an impairment of the autoregulatory mechanism of blood flow in the optic nerve head (ONH) is present in diabetic rabbits and whether the impairment results from the uncoupling of gap junctions. METHODS Experiments were performed on six alloxan-induced diabetic rabbits and six healthy control animals. In a test of the integrity(More)
PURPOSE To evaluate the efficacy of selective laser trabeculoplasty (SLT) in the adjunctive treatment of medically diagnosed open-angle glaucoma and to compare the difference in intraocular pressure (IOP) lowering effects between 180-degree and 360-degree SLT. METHODS This study is a retrospective consecutive chart review of open-angle glaucoma patients(More)
These days it is commonly accepted that multiple factors are involved in the etiology of glaucoma. Although many studies have demonstrated that the major risk factor for glaucoma is an increase in intraocular pressure (IOP), some studies, including epidemiologic studies, have suggested an association between glaucoma, especially primary open-angle glaucoma(More)
PURPOSE To investigate the effects of gelatin hydrogel (GH) containing a chymase inhibitor (CI) on intraocular pressure (IOP) and conjunctival scarring in a canine model of glaucoma surgery. METHODS Glaucoma surgery models were made in beagles. As the first experiment, GH was implanted. IOP was measured for 4 weeks, followed by histologic evaluation. As(More)