71 results match your criteria: "Tajimi Iwase Eye Clinic[Affiliation]"

Purpose Of Review: Rapid increase in the prevalence of myopia has been documented worldwide. Myopia, especially high myopia, is not only an important risk factor for having open angle glaucoma (OAG), but also has a strong linking with the progression of OAG. Since myopic axial length (AXL) elongation is associated with nonglaucomatous optic nerve head (ONH) and visual field abnormalities, myopia poses a challenge in differential diagnosis of OAG.

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Purpose: Little is known about the effects of ambient atmospheric pressure (AP) on intraocular pressure (IOP) under ordinary conditions. This study aimed to investigate the effects of AP on Goldmann applanation tonometer-measured IOP (GAT-IOP) in normal eyes under everyday atmospheric conditions adjusting for effects of possible confounding factors including other climatic factors.

Methods: Data obtained from 2,431 normal healthy eyes of 2,431 subjects (mean age: 56.

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Article Synopsis
  • This study examined how magnification errors and axial length (AL) impact the density of capillaries and the thickness of the retinal nerve fiber layer in healthy eyes.
  • Seventy-two eyes from different subjects were analyzed using optical coherence tomography, revealing that longer AL increases measurement discrepancies (ΔcpCD and ΔcpRNFLT) in specific areas of the eye.
  • Results showed that while corrected capillary density (cpCD) wasn't affected by AL, the corrected retinal nerve fiber layer thickness (cpRNFLT) positively correlated with AL, indicating that longer eyes tend to have a more significant underestimation of cpCD and a stronger relationship with cpRNFLT changes.
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Comparative Analysis of 24-2C, 24-2, and 10-2 Visual Field Tests for Detecting Mild-Stage Glaucoma With Central Visual field Defects.

Am J Ophthalmol

December 2024

From the Department of Ophthalmology, The Jikei University School of Medicine (E.N., K.S., T.N., S.O., S.O., and T.N.), Nishi-Shimbashi, Tokyo, Japan. Electronic address:

Purpose: This study sought to identify the most effective testing program for detecting visual-field defects in mild-stage glaucoma with central visual-field defects.

Design: A multicenter, retrospective diagnostic testing evaluation.

Participants: The study involved 93 eyes (83 patients) with mild-stage glaucoma (median mean deviation [interquartile range]: -1.

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Purpose: To investigate the relationship between the fundus sex index obtained from fundus photographs and body height or axial length in the Kumejima population.

Study Design: Prospective cross-sectional observational population study.

Methods: Using color fundus photographs obtained from the Kumejima population, 1,653 healthy right eyes with reliable fundus parameter measurements were included in this study.

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Article Synopsis
  • AI can accurately predict a person's age using color fundus photographs (CFPs) from a study of healthy participants in Kumejima.
  • The study utilized CFPs from 1,646 participants to analyze various fundus parameters; it found a strong correlation (0.88) between actual and predicted ages with an average error of just 3.64 years.
  • Results indicated significant age-related changes in color intensity in the peripapillary area, which could help in understanding eye diseases like age-related macular degeneration.
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Purpose: To report aging-associated change rates in circumpapillary retinal nerve fiber layer thickness (cpRNFLT) and macular ganglion cell-inner plexiform layer and complex thickness (MGCIPLT, MGCCT) in normal Japanese eyes and to compare the data in linear scaled visual field (VF) sensitivity of central 4 points of Humphrey Field Analyzer (HFA) 24-2 test (VF) to that in MGCIPLT in four 0.6-mm-diameter circles corresponding to the four central points of HFA 24-2 adjusted for retinal ganglion cell displacement (GCIPLT).

Study Design: Prospective observational study METHODS: HFA 24-2 tests and spectral-domain optical coherence tomography (SD-OCT) measurements of cpRNFLT, MGCIPLT, MGCCT and GCIPLT were performed every 3 months for 3 years in 73 eyes of 37 healthy Japanese with mean age of 50.

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Effects of Deep Optic Nerve Head Structures on Bruch's Membrane Opening- Minimum Rim Width and Peripapillary Retinal Nerve Fiber Layer.

Am J Ophthalmol

July 2024

Hamilton Glaucoma Center, Shiley Eye Institute, and the Viterbi Family Department of Ophthalmology (L.M.Z., R.N.W.), University of California San Diego, La Jolla, CA, United States.

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: To predict Humphrey Field Analyzer 24-2 test (HFA 24-2) results using 10-2 results.

Methods: A total of 175 advanced glaucoma eyes (175 patients) with HFA 24-2 mean deviation (MD24-2) of < -20 dB were prospectively followed up for five years using HFA 10-2 and 24-2 (twice and once in a year, respectively). Using all the HFA 24-2 and 10-2 test result pairs measured within three months (350 pairs from 85 eyes, training dataset), a formula to predict HFA 24-2 result using HFA 10-2 results was constructed using least absolute shrinkage and selection operator regression (LASSO).

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Association of Bergmeister Papilla and Deep Optic Nerve Head Structures With Prelaminar Schisis of Normal and Glaucomatous Eyes.

Am J Ophthalmol

January 2024

Hamilton Glaucoma Center (L.M.Z., R.N.W.), Shiley Eye Institute, and the Viterbi Family Department of Ophthalmology, University of California San Diego, La Jolla, California, USA.

Purpose: To investigate factors associated with the severity of prelaminar schisis (PLS) in heathy subjects and glaucoma patients.

Design: Prospective cross-sectional study.

Methods: A total of 217 eyes of 217 subjects (110 normal eyes and 107 open angle glaucoma eyes) were studied.

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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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Article Synopsis
  • The study aimed to assess the relationship between circumpapillary vessel density (cpVD) and visual field sensitivity (VFS) in early glaucomatous (EG) and normal eyes, particularly in those with high myopia (HM).
  • It involved 75 EG eyes and 7 normal eyes with HM, as well as 111 EG and 11 normal eyes without HM, using advanced optical imaging techniques to analyze the data.
  • Results indicated that cpVD had a weaker correlation with axial length (AL) compared to cpRNFLT, and in HM eyes, cpVD showed significant correlations with VFS across multiple sectors, outperforming cpRNFLT in certain areas.
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Purpose: Deep learning artificial intelligence can determine the sex using only fundus photographs. However, the factors used by deep learning to determine the sex are not visible. Therefore, the purpose of the study was to determine whether the sex of an older individual can be determined by regression analysis of their color fundus photographs (CFPs).

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Deep Optic Nerve Head Structures Associated With Increasing Axial Length in Healthy Myopic Eyes of Moderate Axial Length.

Am J Ophthalmol

May 2023

Hamilton Glaucoma Center, Shiley Eye Institute (L.M.Z., R.N.W.), and the Viterbi Family Department of Ophthalmology (L.M.Z., R.N.W.), University of California San Diego, La Jolla, California, USA.

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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Background/aims: To determine a cluster of test points: visual subfield (VSF) of Humphrey Field Analyzer 10-2 test (HFA 10-2) of which baseline sensitivities were associated with future worsening of visual acuity (VA) in eyes with advanced glaucoma.

Methods: A total of 175 advanced glaucoma eyes of 175 advanced glaucoma patients with well controlled intraocular pressure (IOP), a mean deviation of the Humphrey Field Analyzer 24-2 (HFA 24-2) test ≤ -20 decibels and best corrected VA ≥20/40, were included. At baseline, HFA 24-2 and HFA 10-2 tests were performed along with VA measurements.

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Prevalence of Glaucoma and Its Systemic Risk Factors in a General Japanese Population: The Hisayama Study.

Transl Vis Sci Technol

November 2022

Department of Ophthalmology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.

Purpose: To estimate the prevalence of glaucoma and its risk factors in a Japanese community.

Methods: This study included 3405 Japanese community dwellers who were ≥40 years of age and enrolled in the Hisayama Study. This population-based, cross-sectional study was conducted from 2017 to 2018.

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The frequency-doubling technology (FDT) screening test (FDT-C-20-1) has adopted in many recent population-based glaucoma surveys, but factors associated with false-positive (FP) responses to FDT-C-20-1 in normal eyes and false-negative (FN) responses in glaucoma eyes were not known. These factors were investigated in a population-based setting using the data from 3805 normal eyes (2381 subjects) and 272 eyes with definite glaucoma (215 subjects) in the Kumejima Study participants with reliable FDT-C-20-1 results. Considering the presence of at least one abnormal test point (P < 0.

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Background: Although relationship between the retinal vessel caliber (RVC) and glaucoma is well known, there has been a paucity of information on the effects of glaucoma-related optic nerve head (ONH) structural factors on the RVC. Information on this relationship should be useful in studying possible roles of ocular circulation in the development and progression of glaucoma.

Method: Subjects were from Kumejima Study participants aged 40 years and older in Kumejima, Japan.

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This study aimed to evaluate the diagnostic ability and sectoral structure function relationship of circumpapillary vessel density (cpVD) and macular vessel density (mVD) with optical coherence tomography angiography (OCTA) in early glaucomatous (EG) eyes. 224 EG eyes of 167 patients (mean deviation (MD) > - 6 dB) and 70 normal eyes of 70 subjects were enrolled in this retrospective cross-sectional study. All patients underwent OCT and OCTA scanning.

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Purpose: To identify risk factors for further deterioration of central visual function in advanced glaucoma eyes.

Design: Prospective, observational 5-year study.

Participants: Advanced glaucoma patients with well-controlled intraocular pressure (IOP), mean deviation (MD) of the Humphrey Field Analyzer (HFA) 24-2 program ≤-20 dB and best-corrected visual acuity (BCVA) of 20/40.

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Prcis: The inferior>superior>temporal rim width rate (IST pattern) rather than inferior≥superior≥nasal≥temporal (ISNT) pattern was suited for screening glaucoma in Japanese subjects. Failure of the IST pattern was associated with several important risk factors for glaucoma.

Purpose: The purpose of this study was to find a rim width rate pattern to yield the highest positive likelihood ratio (LR+) in detecting glaucoma eyes and to identify risk factors for glaucoma correlating with its failure in a population-based setting.

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Purpose: The purpose of this study was to develop nomograms for converting Full Threshold (FT) and Swedish Interactive Threshold Algorithm (SITA) Fast (SF) tests to SITA Standard (SS) tests with the Humphrey Field Analyzer in patients with glaucoma and healthy subjects.

Methods: One eye each of 49 patients with glaucoma and 50 healthy subjects was tested in 4 and 2 sessions (each containing the 3 strategies), respectively, over 4 weeks. The difference between pointwise Best Available Estimate (BAE; mean of all FT tests) and SS sensitivity at each session was used to derive four nomograms.

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Differentiating Diagnosed and Undiagnosed Primary Angle-Closure Glaucoma and Open-Angle Glaucoma: A Population-Based Study.

Ophthalmol Glaucoma

April 2022

Department of Ophthalmology, Kanto Central Hospital of The Mutual Aid Association of Public School Teachers, Tokyo, Japan; Department of Ophthalmology, University of Tokyo, Graduate School of Medicine, Tokyo, Japan.

Purpose: To study and compare factors contributing to the differentiation between diagnosed and undiagnosed primary angle-closure glaucoma (PACG) and primary open-angle glaucoma (POAG) in the same population.

Design: Population-based survey.

Participants: All residents 40 years of age and older in Kumejima, Japan.

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The Glaucoma Stereo Analysis Study (GSAS) is a multicenter collaborative study of the characteristics of glaucomatous optic disc morphology using a stereo fundus camera. This study evaluated the retinal vessel calibers and correlations using GSAS fundus photographs between retinal vessels and 38 optic nerve head (ONH) morphologic parameters comprehensively. In all 240 eyes, the mean central retinal arteriolar equivalent (CRAE) and central retinal venular equivalent (CRVE) were 138.

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