Purpose: To evaluate the diagnostic ability of a new perimetric procedure in glaucoma.
Methods: Pulsar perimeter shows white circular sinusoidal grating patterns with decreasing amplitude, 5 degrees in diameter, 500 msec in duration in 66 locations. The stimuli scale combines spatial resolution and contrast. The stimuli were shown with centrifugal wave motion at 8 cyl/deg (K6W) or pulse at 30 Hz (T30W). Fifty-six normal eyes and 82 eyes with ocular hypertension and mild glaucoma were included. These 82 cases were classified into four levels of diagnostic certainty, from 0 (ocular hypertension) to 3 (mild glaucoma).
Results: Mean examination time was 3:49 min. Specificity was 96.4% (T30W) and 94.6% (K6W). Sensitivities for levels 0 and 3 were 34.5% to 100% (T30W) and 24.1 % to 75% (K6W). The receiver operating characteristic (ROC) curve areas for T30W at levels 1, 2, and 3 were 0.88, 0.94, and 0.99. The ROC areas for K6W were 0.83, 0.91, and 0.97. There was good correlation between both Pulsar perimetries (r=0.88), but it was lower with conventional perimetry (r=0.58 for T30W and r=0.59 for K6W).
Conclusions: The novel Pulsar T30W perimetry may be helpful for the study of mild glaucoma and ocular hypertension.
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Alzheimers Dement
December 2024
Tohoku Medical Megabank Organization, Tohoku University, Sendai, Japan.
Background: Dementia is age-related with a significant genetic contribution, yet genome-wide association studies have not fully accounted for heritability. This discrepancy may in part be due to reliance on SNPs and small indels. Whole-genome sequencing (WGS) data in the Japanese population may reveal population-specific susceptibility loci for dementia.
View Article and Find Full Text PDFCurr Protoc
January 2025
Department of Ophthalmology, Indiana University School of Medicine, Indianapolis, Indiana.
Human induced pluripotent stem cell (hiPSC)-based disease modeling can be successfully recapitulated to mimic disease characteristics across various human pathologies. Glaucoma, a progressive optic neuropathy, primarily affects the retinal ganglion cells (RGCs). While multiple groups have successfully generated RGCs from non-diseased hiPSCs, producing RGCs from glaucomatous human samples holds significant promise for understanding disease pathology by revealing patient-specific disease signatures.
View Article and Find Full Text PDFInt J Med Sci
January 2025
Department of Ophthalmology, Peking University People's Hospital, No. 11 Xizhimen South Street, Xicheng District, Beijing, China, 100044.
This research was designed to evaluate the efficacy and safety of ab-interno trabeculectomy (Trabectome and Kahook Dual Blade) combined with phacoemulsification, intraocular lens implantation, and goniosynechialysis in eyes with primary angle-closure glaucoma. A total of 47 patients were included in the study and all the patients received the combined surgery. Intraocular pressure, anti-glaucoma medications, best-corrected visual acuity, and the number of peripheral anterior synechiae quadrants were recorded at baseline and at various time points after surgery.
View Article and Find Full Text PDFTransl Vis Sci Technol
January 2025
Department of Ophthalmology, Shimane University Faculty of Medicine, Izumo, Japan.
Purpose: Pressure resistance characteristics of the Paul glaucoma implant (PGI) and Ahmed ClearPath 250 (ACP), with and without the insertion of polypropylene thread in their tubes, were evaluated.
Methods: The in vitro flow pressure was evaluated at varying flow rates, both with and without threads (6-0 for PGI and 4-0 or 3-0 for ACP). Cross-sectional areas of the tube lumen and thread were measured to calculate pressure resistance using the Hagen-Poiseuille equation.
Sci Rep
January 2025
Department of Ophthalmology, Hanyang University Guri Hospital, Hanyang University College of Medicine, Gyongchun-ro 153, Guri, Gyeonggi-do, South Korea.
To evaluate the effectiveness of postoperative intravitreal bevacizumab (IVB) in preventing neovascular glaucoma (NVG) and identify associated risk factors in patients with proliferative diabetic retinopathy (PDR) undergoing phacovitrectomy. Patients with PDR who underwent phacovitrectomy were enrolled and categorized into two subgroups based on their postoperative treatment regimen: one group received IVB within 2 months following phacovitrectomy (Group 1); the other did not receive IVB during this period (Group 2). A comparative analysis evaluated the distinguishing characteristics of the two groups after 1:1 propensity score matching.
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