Publications by authors named "Kazuhisa Sugiyama"

Purpose: To investigate the incidence and predictors of visual acuity (VA) loss after surgery for epiretinal membrane (ERM) in glaucomatous eyes.

Methods: A prospective cohort study examining VA and central visual fields (VFs, Humphrey 10-2) at baseline and 3, 6, and 12 months after vitrectomy with internal limiting membrane peeling for ERM in the glaucoma (47 eyes of 43 patients) and control (46 eyes of 46 patients) groups. VA and VF tests were repeated for ≥1.

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Purpose: To evaluate the 5-year changes in metamorphopsia and outer retinal morphology after vitrectomy for macula-off rhegmatogenous retinal detachment.

Methods: The authors included 21 eyes from 21 patients with macula-off rhegmatogenous retinal detachment who underwent pars plana vitrectomy. Metamorphopsia was quantified using M-CHARTS.

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Background: Currently, the push-in technique through the corneal tunnel using a blunt-tip spatula is used to insert an artificial corneal endothelium (EndoArt) into the anterior chamber (AC). The device is useful for patients with bullous keratopathy; however, it may be difficult to manipulate the very thin implant through hazy cornea. Unlike DMEK graft, it cannot be stained and the F-mark is faint.

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Article Synopsis
  • A study aimed to see if 24-hour contact lens sensor (CLS) measurements could predict glaucoma progression in patients with normal-tension glaucoma (NTG).
  • The researchers tracked 79 patients over an average of 48 months, measuring intraocular pressure (IOP) and other factors to identify progression of the disease.
  • They found that factors like lower nocturnal ocular pulse amplitude, higher ranges of baseline IOP, and the presence of optic disc hemorrhage were significant indicators of glaucoma risk.
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Article Synopsis
  • The study aimed to explore the prevalence of normal-tension glaucoma (NTG) among patients diagnosed with primary aldosteronism (PA).
  • Conducted as a cross-sectional study, various ophthalmic examinations were performed on newly diagnosed PA patients to determine the occurrence of NTG.
  • Results showed an 11.8% prevalence of NTG in PA patients, which was significantly higher compared to hypertensive patients without PA, indicating an increased risk for NTG in this group that was independent of blood pressure levels.
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Article Synopsis
  • The study evaluated the effectiveness and safety of selective laser trabeculoplasty (SLT) as both a first-line and second-line treatment for normal-tension glaucoma (NTG) in Japanese patients.
  • 99 patients were treated with SLT, showing significant reductions in intraocular pressure (IOP) after one year, with the first-line group demonstrating a higher success rate than the second-line group.
  • Most complications observed were minor and temporary, indicating that SLT is a reliable treatment option for NTG regardless of its line of use.
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Purpose: To explore the effects of deep optic nerve head (ONH) structures on Bruch's membrane opening (BMO)-minimum rim width (MRW) and peripapillary retinal nerve fiber layer thickness (pRNFLT) in healthy eyes.

Design: Prospective cross-sectional study.

Methods: Two hundred five healthy eyes of 141 subjects (mean ± standard deviation of age and axial length (AXL): 46.

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Purpose: Iridocorneal endothelial (ICE) syndrome may cause refractory glaucoma due to progressive synechial closure or membrane formation at the anterior chamber angle. Filtration surgeries are often required but are associated with a higher rate of surgical failure or complications than other types of glaucoma. Herein, we report a new and effective surgical procedure for glaucoma secondary to ICE syndrome: Ex-PRESS shunt combined with ab-interno peripheral iridectomy using a small-gauge vitreous cutter.

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Purpose: The purpose of this study was to investigate risk factors for progression in the superior and inferior hemi-visual fields (hemi-VFs) and the corresponding hemi-disc/retinas in eyes with normal tension glaucoma (NTG).

Methods: A 5-year prospective follow-up of 90 patients with NTG with untreated intraocular pressure (IOP) consistently ≤ 15 mm Hg was conducted. The IOP and Humphrey Perimeter measurements and disc/retina stereo-photographs were taken every 3 and 6 months, respectively.

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Disc hemorrhage (DH) is often associated with glaucoma progression. A vertically asymmetrical pattern is typical of glaucoma progression, but it remains unclear whether the association between DH and glaucoma progression differs between the superior and inferior hemiretinas. We compared the thickness changes of the macular ganglion cell complex (GCC) in the hemiretinas of normal-tension glaucoma patients with or without DH, as well as between hemiretinas positive and negative for DH, during five years.

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Prcis: Previous trabeculectomy and medical or surgical glaucoma treatment after Descemet's stripping automated endothelial keratoplasty (DSAEK) were significantly associated with endothelial cell loss and graft failure. The pupillary block was a significant risk factor for graft failure.

Purpose: To evaluate the long-term risk factors associated with postoperative endothelial cell loss and graft failure after DSAEK in Japanese eyes, with special attention to glaucoma.

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We aimed to investigate the clinical characteristics and risk factors for graft rejection after keratoplasty in Japanese patients. We enrolled 730 cases (566 patients) of penetrating keratoplasty (PK, N = 198), Descemet's stripping automated endothelial keratoplasty (DSAEK, N = 277), non-Descemet's stripping automated endothelial keratoplasty (nDSAEK, N = 138), and Descemet membrane endothelial keratoplasty (DMEK, N = 117). The incidence, clinical characteristics, and possible risk factors for graft rejection were analyzed.

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Purpose: To elucidate which swept-source optical coherence tomography (OCT)-derived optic nerve head (ONH) parameters are associated with longer axial length (AXL) in healthy myopic eyes.

Design: Prospective cross-sectional observational study.

Methods: Two hundred eleven healthy eyes of 140 participants (96 emmetropic-mild myopic [AXL: 22.

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Aldosterone, an effector molecule of the renin-angiotensin-aldosterone system (RAAS), has been receiving more attention in the field of ophthalmology because of its possible role in the pathogenesis of various eye diseases or abnormalities; it may even become a target for their treatment. Primary aldosteronism, a typical model of a systemic aldosterone excess, may cause vision loss due to various ocular diseases, such as retinal vein occlusion, central serous chorioretinopathy, and, possibly glaucoma. RAAS components are present in various parts and types of cells present in the eye.

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Prcis: Trabeculectomy using the Tenon advancement technique with a fornix-based (FB) conjunctival flap showed avascular bleb formation less frequently and had a significantly lower risk of developing bleb-related infections than trabeculectomy with a limbus-based conjunctival flap.

Purpose: To determine whether the Tenon advancement technique for trabeculectomy with a FB conjunctival flap is effective in preventing bleb-related infections.

Materials And Methods: This was a single-center, nonrandomized retrospective cohort study of 998 eyes from 854 patients with glaucoma who underwent trabeculectomy with mitomycin C.

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Purpose: To investigate the association of diurnal blood pressure (BP) and other factors with the intraocular pressure (IOP)-related 24-hour contact lens sensor (CLS) profile of patients with untreated glaucoma.

Methods: The prospective study included 82 patients with untreated normal-tension glaucoma. CLS measurements and ambulatory BP monitoring were performed simultaneously for 24 hours.

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Purpose: The purpose of this study was to highlight the manifestations of glaucoma associated with cytomegalovirus (CMV) corneal endotheliitis.

Methods: We reviewed the 34 patients that met the diagnostic criteria for CMV endotheliitis in our hospital, with special attention to the glaucoma status, including onset of glaucoma, glaucoma in the fellow eye, visual field defects, intraocular pressure, and final outcomes.

Results: Thirty-four eyes of 34 patients (mean age, 69.

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Prcis: Corneal hysteresis in both patients with untreated open angle glaucoma and normal individuals demonstrated significant diurnal variation independent of confounding factors and was higher in the nighttime than in the daytime.

Purpose: To investigate diurnal variations in corneal hysteresis (CH) in patients with untreated primary open angle glaucoma (POAG) and normal individuals by using an ocular response analyzer.

Materials And Methods: This prospective study included 72 eyes of 53 patients with untreated POAG and 53 eyes of 47 normal individuals.

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Purpose: Lat knock-in mice were recently proposed as an animal model for immunoglobulin G4 (IgG4)-related disease. In this study, we investigated whether Lat knock-in mice exhibit ophthalmic lesions, specifically in the lacrimal and Harderian glands.

Methods: Lacrimal glands, Harderian glands, and adherent lymphoid follicle lesions were dissected from Lat knock-in mice and wild type (WT) C57BL/6 mice between 6 and 24 weeks of age.

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A prospective study was conducted on 33 eyes of 33 patients with open-angle glaucoma who underwent trabeculectomy to investigate hemodynamic changes in the temporal optic nerve head (ONH) and peripapillary atrophy (PPA) after trabeculectomy. Laser speckle flowgraphy of ONH and PPA was performed at baseline and at 1, 3, and 6 months postoperatively. The waveforms of the mean blur rate in the tissue area (MT) in the temporal ONH, βPPA (with Bruch's membrane), and γPPA (without Bruch's membrane) were evaluated.

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Purpose: To report use of intraoperative optical coherence tomography (OCT) for nanothin Descemet stripping automated endothelial keratoplasty (DSAEK) in a patient with an extremely thickened cornea due to advanced bullous keratopathy.

Observations: A 90-year-old woman with a history of multiple trabeculectomies was referred to us for treatment of advanced bullous keratopathy (1400 μm central corneal thickness). Nanothin DSAEK was planned and performed.

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Purpose: To investigate the optic nerve head (ONH) blood flow, retinal vessel diameters, and retinal ganglion cell (RGC) loss after systemic administration of aldosterone in rats.

Methods: Aldosterone (80 µg/kg/day) or vehicle was administered using an osmotic minipump in Brown Norway rats. The mean blur rate in the vessel (MV) and tissue (MT) regions and retinal vessel diameters in the ONH were measured by laser speckle flowgraphy before and 1, 2, and 4 weeks after administration of aldosterone or vehicle.

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Purpose: IgG4-related ophthalmic disease (IgG4-ROD) is a lymphoproliferative disorder with representative symptoms including lacrimal gland enlargement (Mikulicz disease), masses around the trigeminal nerves, and extraocular muscle swelling. Herein, we describe cases of IgG4-ROD with lesions surrounding the optic nerve.

Methods: Of the 56 consecutive patients (35 men and 21 women) with a "definite case" of IgG4-ROD diagnosed from November 2004 through December 2019 at Kanazawa University hospital, seven patients presented with mass lesions around the optic nerve based on magnetic resonance imaging, and four patients showed symptoms of optic neuropathy.

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