Publications by authors named "Hajime Kawamura"

Purpose: To report a case of peripheral exudative hemorrhagic chorioretinopathy with hemorrhagic retinal detachment and subretinal pigment epithelial hemorrhage treated with transscleral subretinal fluid drainage.

Observations: The patient was a 70-year-old man with a 15-year history of diabetic retinopathy and age-related macular degeneration. During follow-up, he developed a sudden decrease in visual acuity in the left eye.

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Purpose: To investigate anatomic changes in retinal thickness (RT) and functional changes after vitrectomy for idiopathic epiretinal membranes (ERMs) with and without internal limiting membrane (ILM) peeling.

Methods: The medical records of 100 eyes of 96 patients with ERM who underwent vitrectomy and ERM removal were reviewed retrospectively. The RT was measured by optical coherence tomography, and the area was divided into 9 sections.

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Purpose: To evaluate the contrast sensitivity (CS) of eyes successfully repaired by vitrectomy for rhegmatogenous retinal detachment (RRD) with or without preoperative macular involvement.

Methods: In this retrospective, consecutive, interventional case series, 109 eyes received primary vitrectomy for RRD, of which 36 with at least 12 months of follow-up and a best-corrected visual acuity (BCVA) ≥1 at 12 months postoperatively were investigated. The main outcome measurements were BCVA and CS at 12 months postoperatively.

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Purpose: To investigate the predictive factors for postoperative best-corrected visual acuity (BCVA) in patients with vitreomacular traction syndrome treated with vitrectomy.

Methods: The records of 21 patients with 21 eyes that underwent vitrectomy for vitreomacular traction syndrome and followed for at least 12 months were retrospectively reviewed. The BCVA and spectral domain optical coherence tomography findings were investigated preoperatively and at 1, 3, 6, and 12 months postoperatively.

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Background: To investigate the effectiveness of vitrectomy for diffuse diabetic macular edema (DDME) and its dependence on optical coherence tomography (OCT) findings.

Methods: The records of 65 patients and 81 eyes who received vitrectomy for DDME and followed up for at least 6 months were retrospectively reviewed. All eyes were classified according to their morphological characteristics on OCT including sponge-like diffuse retinal thickening (SDRT: n = 13), cystoid macular edema (CME: n = 42), serous retinal detachment (SRD: n = 13), and the combination of all morphological characteristics (FULL: n = 13).

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Purpose: Our aim was to compare the 1 year efficacy and safety results of intravitreal bevacizumab (IVB) in two prospective, consecutive groups of patients with macular edema (ME) following branch retinal vein occlusion (BRVO).

Patients And Methods: Twenty-five eyes with ME after BRVO received one IVB injection (single-injection group) and 27 eyes received three monthly IVB injections (three-injection group). Both groups were followed monthly for 12 months.

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Background/aims: To evaluate the efficacy of anterior chamber paracentesis for preventing sustained intraocular pressure (IOP) elevation after intravitreal ranibizumab (IVR) injections for age-related macular degeneration (AMD).

Methods: The medical records for all cases of exudative AMD treated with IVR injections and followed monthly for 12 months or longer were reviewed retrospectively. Anterior chamber paracentesis was performed just before IVR injections.

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Purpose: To elucidate Japanese trends for perioperative disinfection and antibiotic selection during cataract surgeries.

Methods: Perioperative iodine use and antibiotic prophylaxis for cataract surgery were surveyed in eight regions in Japan by mail or through interviews from February 1 to March 1, 2014.

Results: We surveyed 572 surgeons, of whom 386 (67%) responded.

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Purpose: To evaluate scleral imbrication with vitrectomy and gas tamponade for refractory macular hole retinal detachment associated with high myopia.

Methods: We retrospectively reviewed the medical records of eight eyes with macular hole retinal detachment and high myopia treated with temporal scleral imbrication, pars plana vitrectomy, and gas tamponade for refractory macular hole retinal detachment with history of pars plana vitrectomy. Retinal reattachment and macular hole closure were assessed.

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Purpose: To evaluate the 1-year results of pars plana vitrectomy for proliferative diabetic retinopathy.

Patients And Methods: Two hundred thirty six patients with proliferative diabetic retinopathy received primary vitreous surgery at Shiga University of Medical Science Hospital and had at least 1 year follow-up period. The indications for pars plana vitrectomy included vitreous hemorrhage in 140 eyes, extramacular tractional retinal detachment in 60 eyes, macular tractional retinal detachment in 24 eyes and combined tractional retinal detachment in 12 eyes.

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Purpose: To evaluate the efficacy of bimonthly intravitreal injections of ranibizumab for age-related macular degeneration (AMD) and polypoidal choroidal vasculopathy (PCV) in a pilot study.

Methods: This study was a prospective, interventional case series. Thirty eyes of 30 patients received prospectively at least three bimonthly intravitreal injections of ranibizumab (0.

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Purpose: To evaluate vascular endothelial growth factor (VEGF) and ranibizumab concentrations in eyes with age-related macular degeneration (AMD) after monthly and bimonthly intravitreal ranibizumab (IVR) injections.

Methods: Aqueous humor samples were obtained from 26 eyes with AMD before and after IVR injections. Nine eyes received three monthly injections and 17 eyes received two bimonthly injections.

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Background: To investigate long-term intraocular pressure (IOP) changes after vitrectomy for epiretinal membrane (ERM) or macular hole (MH).

Methods: We retrospectively reviewed the medical records of 57 eyes with ERM and 61 eyes with MH that underwent vitrectomy. IOP levels and changes at 1, 3, 6, 12 months, and the final visit from baseline were evaluated in vitrectomized eyes and non-vitrectomized fellow eyes.

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Purpose: To determine the role of vascular endothelial growth factor (VEGF) in macular edema secondary to branch retinal vein occlusion (BRVO).

Patients And Methods: Aqueous humor samples were collected from 52 eyes with macular edema secondary to BRVO before intravitreal drug injections and from 62 control eyes with cataract. VEGF was measured using an enzyme-linked immunosorbent assay.

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Purpose: To retrospectively evaluate efficacy, safety, and visual outcomes of pneumatic displacement for submacular hemorrhages (SMHs) with or without tissue plasminogen activator (tPA).

Methods: Sixty-eight eyes with fresh SMHs underwent pneumatic displacement. Thirty eyes received intravitreal injection of pure C3F8 gas alone and 38 eyes received gas with tPA (25 μg).

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Purpose: To evaluate the effect of vitrectomy on the concentration of vascular endothelial growth factor (VEGF) and the pharmacokinetics of intravitreally injected bevacizumab in the aqueous humor in cynomolgus macaques.

Methods: Pars plana lensectomy and a standard three-port vitrectomy were performed in one eye each of six macaques. After a minimal 12-week healing period, the vitrectomized eyes received an intravitreal injection of bevacizumab (1.

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Purpose. To compare the macular thicknesses in diabetic macular edema (DME) measured with spectral-domain optical coherence tomography (SD-OCT) and time-domain (TD) OCT. Patients and Methods.

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Purpose: To compare the efficacy of intravitreal injections of triamcinolone acetonide (TA) and that of bevacizumab for macular oedema because of branch retinal vein occlusion (BRVO).

Design: Prospective, comparative, randomized, interventional clinical trial.

Methods: Forty-three eyes of 43 patients with macular oedema because of BRVO were randomly assigned to 4-mg intravitreal injections of TA (IVTA)(21 patients, IVTA group) or 1.

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Aim: To compare the effects of one intravitreal bevacizumab (IVB) injection with three monthly injections for myopic choroidal neovascularization.

Methods: Group A included 13 patients treated with one IVB injection; group B included 19 patients treated with three monthly 1.25-mg IVB injections.

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Purpose: The aim of this study was to evaluate the relationship between the concentrations of vascular endothelial growth factor (VEGF) in the aqueous humor and axial length.

Methods: Aqueous humor samples were obtained from 60 eyes of 60 patients without ocular diseases other than cataracts. No patients with diabetes mellitus were included.

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Aims: To evaluate sclerotomy closure after 25- and 23-gauge transconjunctival sutureless pars plana vitrectomy using optical coherence tomography (OCT).

Methods: Forty-eight eyes (20 with a macular hole and 28 with an epiretinal membrane) of 47 patients (mean age, 66.5 years) who underwent one of the two procedures were included.

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Purpose: The purpose of this study was to evaluate vascular endothelial growth factor (VEGF) concentrations in the aqueous humor of eyes after intravitreal injections of pegaptanib or ranibizumab in patients with age-related macular degeneration.

Methods: Aqueous humor samples were obtained from 16 eyes with choroidal neo-vascularization secondary to age-related macular degeneration before and after intravitreal injections of pegaptanib (0.3 mg; 5 eyes) and ranibizumab (0.

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Purpose: To determine the concentration of vascular endothelial growth factor (VEGF) in the aqueous humour of eyes with myopic choroidal neovascularization (mCNV).

Methods: Aqueous humour samples were obtained from 21 eyes of 21 patients with mCNV and from 21 eyes of 21 patients with cataract without CNV or other ocular or systemic diseases (control group). The VEGF concentration in the aqueous humour was measured using an enzyme-linked immunosorbent assay.

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