The eye lens displays a variety of phenotypes in the wake of genetic modifications or environmental influences. Therefore, a high-resolution in vivo imaging method for the lens is desirable. Optical coherence tomography (OCT) has become a powerful imaging tool in ophthalmology, especially for retinal imaging in small animal models such as mice. Here, we demonstrate an optimized approach specifically for anterior eye segment imaging with spectral domain OCT (SD-OCT) on several known murine lens cataract mutants. Scheimpflug and histological section images on the same eye were used in parallel to assess the observed pathologies. With SD-OCT images, we obtained detailed information about the different alterations from the anterior to the posterior pole of the lens. This capability makes OCT a valuable high-resolution imaging modality for the anterior eye segment in mouse.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1016/j.exer.2019.107871 | DOI Listing |
Clin Ophthalmol
January 2025
Department of Ophthalmology, Manhattan Eye, Ear, and Throat Hospital/Northwell Health, New York, NY, USA.
Purpose: To assess the diagnostic capability of pattern electroretinography (PERG) and varying circumpapillary optical coherence tomography (OCT) scan diameters in glaucoma suspects (GS).
Methods: This is a prospective, cross-sectional study. Circumpapillary retinal nerve fiber layer thickness (RNFLT) was measured using spectral domain OCT in 49 eyes from 26 patients (36 normal, 13 GS) in three circle diameters (3.
Ophthalmol Sci
November 2024
National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, Maryland.
Objective: To propose Deep-RPD-Net, a 3-dimensional deep learning network with semisupervised learning (SSL) for the detection of reticular pseudodrusen (RPD) on spectral-domain OCT scans, explain its decision-making, and compare it with baseline methods.
Design: Deep learning model development.
Participants: Three hundred fifteen participants from the Age-Related Eye Disease Study 2 Ancillary OCT Study (AREDS2) and 161 participants from the Dark Adaptation in Age-related Macular Degeneration Study (DAAMD).
Sensors (Basel)
January 2025
Shunde Innovation School, University of Science and Technology Beijing, Foshan 528399, China.
Mid-infrared spectral analysis has long been recognized as the most accurate noninvasive blood glucose measurement method, yet no practical compact mid-infrared blood glucose sensor has ever passed the accuracy benchmark set by the USA Food and Drug Administration (FDA): to substitute for the finger-pricking glucometers in the market, a new sensor must first show that 95% of their glucose measurements have errors below 15% of these glucometers. Although recent innovative exploitations of the well-established Fourier-transform infrared (FTIR) spectroscopy have reached such FDA accuracy benchmarks, an FTIR spectrometer is too bulky. The advancements of quantum cascade lasers (QCLs) can lead to FTIR spectrometers of reduced size, but compact QCL-based noninvasive blood glucose sensors are not yet available.
View Article and Find Full Text PDFSensors (Basel)
January 2025
Institute of Optical Materials and Technologies, Bulgarian Academy of Sciences, 109, Acad. G. Bonchev Str., 1113 Sofia, Bulgaria.
Magneto-optical magnetic field/current sensors are based on the Faraday effect, which involves changing the polarized state of light. Polarimetric methods are therefore used for measuring polarization characteristics. Channeled polarimetry allows polarization information to be obtained from the analysis of the spectral domain.
View Article and Find Full Text PDFSensors (Basel)
January 2025
China Railway Construction Bridge Engineering Bureau Group Co., Ltd., Tianjin 300300, China.
GNSS-RTK offers numerous advantages and broad prospects in structural dynamic monitoring in civil engineering. However, in practical applications, GNSS-RTK accuracy is susceptible to the monitoring environments, causing actual monitoring accuracy to fall below its calibrated accuracy. This study investigates the monitoring accuracy and spectral characteristics of GNSS-RTK based on stability tests under different environments related to reflection and obstruction conditions (i.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!