Publications by authors named "Yasumasa Otori"

Purpose: This study aimed to report a case of intravitreal gas injection in the supine position for hypotony after intrascleral intraocular lens (IOL) fixation in a patient with Vogt-Koyanagi-Harada (VKH) disease.

Observations: A 72-year-old Japanese female patient presented with blurred vision in her right eye. Both eyes exhibited a sunset glow fundus due to VKH disease.

View Article and Find Full Text PDF

Purpose: To compare the outcomes of ab interno suture trabeculotomy (AbI-TLO) and ab externo metal trabeculotomy (AbE-TLO) in adult patients with glaucoma aged over 40 years.

Patients And Methods: A retrospective chart review was conducted, including adult patients with glaucoma who underwent AbI-TLO or AbE-TLO between January 2015 and June 2019. A single surgeon (YO) performed all the operations.

View Article and Find Full Text PDF

Purpose: To report a case of subarachnoid hemorrhage-negative Terson syndrome following intracranial artery treatment with flow diverter stents.

Observations: A 40-year-old Asian woman presented with floaters in her right eye after treatment of an intracranial aneurysm with flow diverter stents. Vitreous hemorrhage and sub-inner limiting membrane (sub-ILM) hemorrhage were present in her right eye.

View Article and Find Full Text PDF

Purpose: To evaluate anxiety felt by glaucoma patients.

Patients And Methods: In total, 472 glaucoma patients responded to a questionnaire on anxiety, subjective symptoms, and vision-related quality of life (VR-QOL) associated with glaucoma. Anxiety was evaluated using the State-Trait Anxiety Inventory (STAI), state anxiety (STAI-State) subscale along with our novel questionnaire, assessing visual function and subjective symptoms, specialized for glaucoma.

View Article and Find Full Text PDF

Purpose: We assessed vision-related quality of life (VR-QOL) in glaucoma patients and examined the relationship between VR-QOL and indices of visual function and subjective symptoms.

Patients And Methods: Four hundred seventy-two glaucoma patients completed a questionnaire concerning VR-QOL and subjective symptoms of glaucoma. VR-QOL was based on 5 subscales selected from the National Eye Institute 25-item Visual Function Questionnaire (NEI VFQ-25), whereas subjective symptoms were examined using original questions that we prepared.

View Article and Find Full Text PDF

Purpose: To evaluate changes in axial length and choroidal thickness after trabeculectomy.

Patients And Methods: Fourteen patients under 80 years of age with glaucoma, were enrolled. The choroid was imaged using prototypical high-penetration optic coherence tomography (OCT) and the thickness was measured.

View Article and Find Full Text PDF

Purpose: To describe ocular complications in patients with human immunodeficiency virus (HIV) infection before and after highly active antiretroviral therapy(HAART).

Materials And Method: We retrospectively reviewed the medical records of 261 patients who underwent HAART and visited our clinic between April, 2007 and March, 2010, and recorded ocular complications, CD4 cell counts, visual acuity and other relevant patient information.

Results: Befor HAART patients were found to have the following conditions: HIV retinopathy (41 cases), cytomegalovirus (CMV) retinitis (23 cases), and others (6 cases); and after HAART HIV retinopathy (5 cases), CMV retinitis (16 cases), Immune recovery uveitis(IRU) (4 cases), and others(9 cases).

View Article and Find Full Text PDF

Purpose: To determine the incidence and risk factors for delayed-onset intraocular pressure (IOP) elevations after vitrectomy for Stages 4 and 5 retinopathy of prematurity and, in addition, to determine the results of treating the IOP elevations.

Methods: Fifty-five consecutive eyes with successful retinal reattachment and at least 24 months of follow-up after vitrectomy were studied. The ophthalmic examinations included slit-lamp biomicroscopy, wide-field digital retinal imaging, and IOP measurements.

View Article and Find Full Text PDF

Purpose: To investigate the relationship between relative lens position (RLP) and appositional closure in eyes with narrow angles.

Methods: Ultrasound biomicroscopy (UBM) was used to measure anterior chamber depth (ACD) and lens thickness (LT), and the IOLMaster to measure axial length (AL). The number of quadrants with appositional closure was assessed by UBM under dark conditions.

View Article and Find Full Text PDF

Background And Objective: To assess and explore the effectiveness of phacoemulsification and trabeculotomy combined with goniosynechialysis in lowering intraocular pressure in eyes with uncontrollable chronic angle-closure glaucoma.

Patients And Methods: The medical charts of 24 eyes of 22 patients with chronic angle-closure glaucoma were reviewed retrospectively. The probability of successful treatment in 12 eyes that had earlier glaucoma attacks and 12 that did not have an attack were evaluated with Kaplan-Meier life-table analysis with the target pressure set at 15 mm Hg.

View Article and Find Full Text PDF

Purpose: To assess the usefulness of anterior segment optical coherence tomography (AS-OCT) in evaluating postoperative filtering bleb function.

Methods: Forty-eight eyes of 39 patients who had earlier undergone trabeculectomy were enrolled. Blebs were imaged with a commercially available AS-OCT system.

View Article and Find Full Text PDF

Purpose: To evaluate the biologic efficacy of intravitreal bevacizumab (IVB) for iris neovascularization (INV) or neovascular glaucoma (NVG) in patients with ischemic retinal disorders.

Design: Retrospective, consecutive, interventional case series.

Participants: Thirty patients (41 eyes) with INV or NVG secondary to ischemic retinal disorders.

View Article and Find Full Text PDF

Purpose: To determine whether alpha-amino-3-hydroxy-5-methylisoxazole-4-propioate (AMPA) receptor (AMPAR) subunit proteins are expressed in cultured retinal ganglion cells (RGCs).

Methods: RGCs were purified from dissociated rat retinal cells (postnatal days 6-8), using a modified two-step panning method and cultured in serum-free medium containing neurotrophic factors and forskolin. Immunohistochemistry was performed on cultured RGCs on days 1, 3, and 7 in vitro (1 DIV, 3 DIV, and 7 DIV) using specific antibodies against AMPAR subunits GluR1 to 4 and microtubule-associated protein (MAP) 2, which is a neuronal marker.

View Article and Find Full Text PDF

Purpose: The anterior ocular segment topography in angle-closure glaucoma was studied using the non-contact three-dimensional anterior segment analyzer Pentacam.

Subjects And Methods: The central anterior chamber (AC) depth, mid-peripheral AC depth, peripheral AC depth, AC volume, central AC depth/ocular axial length ratio and angles of a narrow angle group (47 eyes of 29 patients), a post laser iridotomy (LI) group (43 eyes of 30 patients), and an open-angle glaucoma (OAG) group (37 eyes of 21 patients) were measured and compared. In addition, changes in the parameters before and after LI (13 eyes of 9 patients) were investigated.

View Article and Find Full Text PDF

The neuroprotective effect of donepezil, an acetylcholinesterase inhibitor on retinal ganglion cells (RGCs), was examined. The survival of purified RGCs after exposure to glutamate with or without donepezil (10(- 7) M to 10(- 5) M) was measured after 3 days in culture. In vivo, the neuroprotective effect of donepezil was examined by quantifying the number of viable RGCs 7 days after axotomy in adult rats.

View Article and Find Full Text PDF

Purpose: To determine whether repeated intravitreal triamcinolone (IVTA) injections in patients with Behçet disease that is resistant to conventional therapy will prevent recurrences of uveitis.

Design: Prospective preliminary clinical trial.

Methods: Nine eyes of five patients with Behçet disease with sight-threatening uveitis that was resistant to conventional therapy received repeated IVTA injections.

View Article and Find Full Text PDF

Purpose: To evaluate the effect of substituting latanoprost(LAT) 0.005% for unoprostone(UNO) 0.12% after a trial of unilateral treatment.

View Article and Find Full Text PDF

We evaluated whether factors secreted by human amniotic epithelial cells (HAECs) have the neuroprotective effect on rat retinal ganglion cells (RGCs) purified by immunopanning. After culture in B27 complete medium containing B27 supplement, brain-derived neurotrophic factor (BDNF), ciliary neurotrophic factor (CNTF) and forskolin, the medium was changed to: (1). medium containing N2 supplement and forskolin (N2 basal medium); (2).

View Article and Find Full Text PDF

We determined the effect of nilvadipine, a dihydropyridine-type calcium channel blocker, in preventing glutamate neurotoxicity in purified retinal ganglion cells (RGCs). RGCs were purified from dissociated rat retinal cells (postnatal days 6-8), using a modified two-step panning method, and cultured in serum-free medium containing neurotrophic factors and forskolin. RGC survival after exposure to glutamate (25 microM) with nilvadipine or other calcium channel blockers was measured by calcein-acetoxymethyl ester staining after 3 days in culture.

View Article and Find Full Text PDF

The purpose of this study was to determine whether timolol, an ocular hypotensive drug, has retinal neuroprotective effects in experimental in vitro and in vivo models. For in vitro studies, we used retinal neuron cultures from rat embryos and purified retinal ganglion cells (RGCs) from newborn rats. In the former, neurotoxicity was induced using 1 mM glutamate and cell viability was assessed.

View Article and Find Full Text PDF

Purpose: Low concentrations of excitotoxic agents such as glutamate decrease survival of retinal ganglion cells (RGCs) and may be an important cause of RGC death in a variety of retinal diseases. Arachidonic acid (AA), an intercellular messenger in the central nervous system, has been reported to have multiple effects on glutamate receptors, including an inhibitory effect on non-N-methyl-D-aspartate (NMDA) receptors. The purpose of this study was to test the hypothesis that AA could protect RGCs from glutamate neurotoxicity.

View Article and Find Full Text PDF

Purpose: N-syndecan is a transmembrane heparan sulfate proteoglycan, that is highly expressed in neural tissues. In the current study, changes in N-syndecan expression during retinal development were examined.

Methods: Localization of N-syndecan in developing rat retina was examined by immunohistochemistry and in situ hybridization.

View Article and Find Full Text PDF