Article
Chemistry, Analytical
Ruslan D. D. Khlynov, Victoria A. A. Ryzhova, Sergey N. N. Yarishev, Igor A. A. Konyakhin, Valery V. V. Korotaev, Yuri E. E. Shelepin, Todor S. S. Djamiykov, Marin B. B. Marinov
Summary: This article discusses the importance of non-invasive optoelectronic technologies for human blood monitoring and proposes a polarization-based blood monitoring system as an alternative to traditional devices. The developed system shows potential for clinical applications.
Article
Optics
Angela Soria-Garcia, Jesus del Hoyo, Luis Miguel Sanchez-Brea, Veronica Pastor-Villarrubia, Veronica Gonzalez-Fernandez, Mahmoud H. Elshorbagy, Javier Alda
Summary: This article introduces a device that uses a Vector Diffractive Optical Element (VDOE) to determine the polarization state of an incident light beam. The device is able to simultaneously evaluate the four Stokes parameters of the light under analysis. The VDOE is sectorized into several Fresnel zone plates, enabling a compact arrangement and facilitating optoelectronical integration. The authors have also developed a procedure to remove diffractive effects and systematic errors. From the simulated results, the device is able to identify any polarization incident state with an averaged uncertainty of 0.006%. Finally, the authors experimentally verify the VDOE with non-ideal polarization elements to further validate and test their proposed design, with an averaged uncertainty of 3.33%.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Computer Science, Interdisciplinary Applications
Jianfei Liu, Christine Shen, Nancy Aguilera, Catherine Cukras, Robert B. Hufnagel, Wadih M. Zein, Tao Liu, Johnny Tam
Summary: This paper introduces a method called A-GANs, which efficiently generates annotated images by combining ACAM and C-GANs. Experimental results show that it performs well in cell segmentation and synthesizing realistic images.
IEEE TRANSACTIONS ON MEDICAL IMAGING
(2021)
Article
Engineering, Biomedical
V Deepika, V JeyaLakshmi, P. Latha, Rajiv Raman, S. Srinivasalu, Janani R. Surya, Sundaresan Raman, K. S. Kandle
Summary: In this study, various methods of fractal analysis of retinal images were compared, with the Hausdorff Fractal Dimension (HFD) method showing the most consistent and reliable results across different databases for normal and diseased retinal images.
BIOMEDICAL SIGNAL PROCESSING AND CONTROL
(2021)
Article
Astronomy & Astrophysics
Masen P. Lamb, Carlos Correia, Suresh Sivanandam, Robin Swanson, Polina Zavyalova
Summary: This study investigates the Phase Diversity technique in the context of a segmented mirror telescope with an adaptive optics system. By successfully separating segmented telescope phasing errors from non-common path aberrations, the technique shows promising potential for improving optical system performance.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Optics
Sergey S. Kruk, Lei Wang, Basudeb Sain, Zhaogang Dong, Joel Yang, Thomas Zentgraf, Yuri Kivshar
Summary: Assembling dissimilar nonlinear dielectric resonators into translucent metasurfaces, the asymmetric parametric generation of light in nonlinear metasurfaces is demonstrated, paving the way for innovative nanophotonic component designs.
Article
Environmental Sciences
Gaurav Kumar Dashondhi, Krishna Mohan Buddhiraju
Summary: This study proposes a marine vessel detection methodology based on the degree of polarization (DOP) of synthetic aperture radar (SAR) images. The methodology optimizes the transmitted polarization mode to improve vessel detection accuracy. The results show significant improvement compared to other polarization modes and state-of-the-art techniques.
JOURNAL OF THE INDIAN SOCIETY OF REMOTE SENSING
(2022)
Article
Medicine, General & Internal
Xiaoyu Xin, Qingge Guo, Shuai Ming, Changgeng Liu, Zhongfeng Wang, Bo Lei
Summary: The study investigated the association between axial length and various ocular parameters in myopic eyes. Results showed that with increasing myopia severity, axial length was associated with thinning of the lens, decrease in outer retinal and choroid thickness, as well as changes in cone density and spacing. Despite these changes, best-corrected visual acuity remained unaffected.
FRONTIERS IN MEDICINE
(2021)
Article
Chemistry, Inorganic & Nuclear
Alberto Tufaile, Adriana Pedrosa Biscaia Tufaile
Summary: In this study, we investigated the polarization of light in a thin film of ferrofluid under a magnetic field using the Mueller matrix formalism. By observing experimental results, we found that the changes in dichroism can be monitored along the sample, allowing for the visualization of magneto-optical effects for linear polarized light.
Article
Optics
Chitra Shaji, S. B. Sruthil Lal, Alok Sharan
Summary: This paper reports the significance of the double Stokes-Mueller polarimetry technique in characterizing a large size KTP crystal. The technique allows for the determination of crystal axes orientation and other parameters, and can be compared with traditional methods.
JOURNAL OF NONLINEAR OPTICAL PHYSICS & MATERIALS
(2023)
Article
Computer Science, Information Systems
Mohamed M. Abdelsalam, M. A. Zahran
Summary: Diabetic Retinopathy (DR) is a diabetes-related complication that can lead to vision loss if not detected early. A novel approach based on multifractal geometry has been proposed for early detection, using optical coherence tomography angiography images and a machine learning algorithm to achieve high accuracy. This method can also be applied to classify other stages of diabetic retinopathy or retinal diseases affecting blood vessels.
Article
Ophthalmology
Jade Y. Moon, Itika Garg, Ying Cui, Raviv Katz, Ying Zhu, Rongrong Le, Yifan Lu, Edward S. Lu, Cassie A. Ludwig, Tobias Elze, David M. Wu, Dean Eliott, Joan W. Miller, Leo A. Kim, Deeba Husain, Demetrios G. Vavvas, John B. Miller
Summary: In this study, we used wide-field swept-source optical coherence tomography angiography to evaluate microvascular and chorioretinal changes in different stages of myopia. We found that high myopia was associated with a decrease in vessel density and vessel skeletonised density in all layers, as well as a decrease in retinal thickness and choroidal thickness. These findings provide insights into the progression of myopia and its potential vision-threatening complications.
BRITISH JOURNAL OF OPHTHALMOLOGY
(2023)
Article
Ophthalmology
Christoph Lwowski, Klemens Paul Kaiser, Julian Bucur, Philipp Schicho, Thomas Kohnen
Summary: Using the axial length of the fellow eye for intraocular lens (IOL) calculation in eyes with retinal detachment significantly decreases the predictability of IOL power. Using the axial length of the silicone oil filled eye after initial vitrectomy yields better postoperative refractive results. A two-step procedure incorporating the axial length of the operated eye after retina reattachment is highly recommended.
BRITISH JOURNAL OF OPHTHALMOLOGY
(2023)
Article
Computer Science, Information Systems
Shaowei Weng, Tiancong Zhang, Zhijie Wu, Juan Lin, Wien Hong
Summary: A novel joint image coding and reversible data hiding method for VQ compressed images is proposed. By rearranging the VQ indices and exploiting their correlations, the method achieves improved prediction performance and reduced bitrate.
INFORMATION SCIENCES
(2022)
Article
Ophthalmology
Wei Wang, Yifan Chen, Kun Xiong, Xia Gong, Xiaoling Liang, Wenyong Huang
Summary: In this study, it was found that patients with longer axial length and larger axial length-to-corneal radius ratio have a lower risk of developing diabetic retinopathy (DR).
BRITISH JOURNAL OF OPHTHALMOLOGY
(2023)
Article
Multidisciplinary Sciences
Clara Benedi-Garcia, Maria Vinas, Carlos Dorronsoro, Stephen A. Burns, Eli Peli, Susana Marcos
Summary: The research demonstrates that both chromatic and monochromatic aberrations in the eye affect the optical quality of images projected on the retina, but their combination is not always simply additive, and the eye has a high degree of adaptability to blur.
SCIENTIFIC REPORTS
(2021)
Review
Ophthalmology
Frank Brodie, Michael Repka, Stephen Allan Burns, S. Grace Prakalapakorn, Christie Morse, Joel S. Schuman, Michael R. Duenas, Natalie Afshari, John S. Pollack, Jennifer E. Thorne, Albert Vitale, H. Nida Sen, David Myung, Mark S. Blumenkranz, Elmer Tu, Daniel X. Hammer, Michelle Tarver, Bradley Cunningham, Larry Kagemann, SriniVas Sadda, David Sarraf, Glenn J. Jaffe, Malvina Eydelman
Summary: The forum brought together professionals from various fields to discuss the innovative applications and related issues of laser imaging technology in ophthalmology, with a focus on the emerging role of artificial intelligence in ocular imaging.
JAMA OPHTHALMOLOGY
(2021)
Article
Ophthalmology
William H. Swanson, Brett J. King, Stephen A. Burns
Summary: Diagnosing the severity of perimetric damage in glaucoma patients by analyzing the presence of nerve fiber bundles in AOSLO images of RNFL reflectance defects could potentially provide valuable insights for predicting and managing the condition.
OPTOMETRY AND VISION SCIENCE
(2021)
Article
Medicine, General & Internal
Ann E. Elsner, Brittany R. Walker, Robert N. Gilbert, Vamsi Parimi, Joel A. Papay, Thomas J. Gast, Stephen A. Burns
Summary: AOSLO imaging revealed widespread retinal vascular remodeling in all diabetic eyes, while SDOCT showed no increased retinal thickness. Cone reflectivity changes were found in all diabetic patients, but significantly low cone density was only present in some patients.
FRONTIERS IN MEDICINE
(2022)
Article
Biochemical Research Methods
Alessandra Carmichael-Martins, Thomas J. Gast, Stephen A. Burns, Rittany R. Walker, Brett J. King
Summary: Intraocular pressure is the only modifiable risk factor for glaucoma progression, and many treatments aim to target the trabecular meshwork. However, imaging this region in vivo is challenging due to optical limitations. This study proposes a gonioscopic OCT approach using a custom goniolens and a commercially available OCT device to improve imaging of the trabecular meshwork and adjacent structures.
BIOMEDICAL OPTICS EXPRESS
(2022)
Review
Biochemical Research Methods
David R. Williams, Stephen A. Burns, Donald T. Miller, Austin Roorda
Summary: This review discusses the advancements that have been made in the field of ophthalmoscopes with adaptive optics (AO) technology over the past 25 years. The integration of AO has revolutionized our ability to image the retina at a cellular level inside the living eye. The review highlights the technological progress achieved through the combination of AO with other imaging modalities and the potential future developments in this field.
BIOMEDICAL OPTICS EXPRESS
(2023)
Article
Biochemical Research Methods
Alessandra Carmichael-Martins, Thomas J. Gast, Brett J. King, Brittany R. Walker, Marcelina Sobczak, Stephen A. Burns
Summary: The trabecular meshwork is a target for glaucoma treatments, with a newly designed gonioscopic lens optimized for high-resolution imaging to capture fine structures in vivo. This design improves imaging quality and reveals details not visible with previous designs.
BIOMEDICAL OPTICS EXPRESS
(2023)
Article
Biochemical Research Methods
Ann Elsner, Joel Papay, Vamsi Parimi, Hae Won Jung, Christopher Clark, Stephen Burns, Thomas Gast
Summary: This article introduces a free-space, trolley-mounted potential vision tester, which is designed to study and improve the accuracy of visual acuity measurements in the aging eye. The device includes features such as a high-resolution visual display, a 3 mm pupil to limit wavefront aberrations, and a moderate cost deformable mirror. The results demonstrate that the device can accurately measure visual acuity and the induced aberrations are repeatable and stable.
BIOMEDICAL OPTICS EXPRESS
(2023)
Meeting Abstract
Ophthalmology
Vamsi Parimi, Ann E. Elsner, Joel A. Papay, Robert N. Gilbert, Thomas J. Gast, Christopher Anderson Clark, Stephen A. Burns
INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE
(2022)
Meeting Abstract
Ophthalmology
Alessandra Carmichael-Martins, Brett King, Thomas J. Gast, Brittany Walker, Stephen A. Burns
INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE
(2022)
Meeting Abstract
Ophthalmology
Ann E. Elsner, Thomas J. Gast, Brittany Walker, Robert N. Gilbert, Vamsi Parimi, Stephen A. Burns
INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE
(2022)
Article
Ophthalmology
Raymond L. Warner, Thomas J. Gast, Kaitlyn A. Sapoznik, Alessandra Carmichael-Martins, Stephen A. Burns
Summary: The study investigated the spatial and temporal variability of blood velocity in small retinal vessels using a dual-beam adaptive optics scanning laser ophthalmoscope. The results showed that there are inherent variations in blood velocity in capillaries, with different levels of physiological variability in arterioles, capillaries, and venules. The study provides a foundation for future research on vascular regulation in individual capillaries.
INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE
(2021)
Meeting Abstract
Ophthalmology
Raymond Warner, Thomas Gast, Kaitlyn Sapoznik, Alessandra Carmichael-Martins, Stephen Burns
INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE
(2021)
Meeting Abstract
Ophthalmology
Alessandra -Martins, Thomas Gast, Brett King, Stephen Burns
INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE
(2021)
Meeting Abstract
Ophthalmology
Vamsi Parimi, Ann Elsner, Brittany Walker, Robert Gilbert, Thomas Gast, Stephen Burns
INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE
(2021)
