Results 91 to 100 of about 3,240,334 (311)

Screening for keratoconus in a refractive surgery population of Upper Egypt

, 2018
Purpose The purpose of this study was to evaluate the prevalence of keratoconus among candidates of refractive surgery in Upper Egypt. Setting The study was conducted in Sohag University Hospital and Future Center (a private center) for laser in-situ ...
Adham S Saro, Gamal A. Radwan, U. Mohammed, M. Abozaid   +3 more
semanticscholar   +1 more source

Midbrain PAG Astrocytes Modulate Mouse Defensive and Panic‐Like Behaviors

Advanced Science, EarlyView.
Astrocytes in the midbrain periaqueductal gray (PAG) dynamically encode threat intensity and shape defensive action selection in mice. Real‐time Ca2+ imaging reveals robust astrocytic activation during predator odor and CO2 exposure. Aberrant astrocytic Ca2+ overactivation disrupts goal‐directed escape, biases behavior toward freezing, and induces ...
Ellane Barcelon, Kyungchul Noh, Minkyu Hwang, Yoon‐Jung Kim, Unjin Lee, Yeon Joo Ryu, Je‐Kyung Ryu, Sang Beom Jun, Se‐Young Choi, Woo‐Hyun Cho, Sung Joong Lee   +10 more
wiley   +1 more source

Keratorefractive lenticule extraction (KLEx) versus femtosecond laser-assisted in situ keratomileusis (FS-LASIK) for the treatment of myopia and compound myopic astigmatism: study protocol of a randomised clinical trial in Mexico

BMJ Open
Introduction Kerato-lenticule extraction (KLEx) is a refractive surgery technique that, in contrast with femtosecond laser-assisted in situ keratomileusis (FS-LASIK), does not require the creation of a flap to correct refractive defects.
Alejandro Navas, Arturo Ramirez-Miranda, Nicolás Kahuam-López, Mauricio Muleiro-Alvarez, Guillermo Raul Vera-Duarte, Eber A. Medina-Estrada, Gustavo Ortiz-Morales, Enrique L. Graue-Wiechers, Enrique O. Graue-Hernandez   +8 more
doaj   +1 more source

Endothelial cell viability comparing Eusol-C vs Optisol-GS as corneal preservation medium

Revista Médica del Hospital General de México, 2023
Introduction: Optisol-GS is the most widely used corneal preservation medium worldwide, there is little evidence to compare it against Eusol-C as a corneal preservation medium.
Erick E. Mena-Linares, Leticia Vázquez-Maya, Karla García-Carmona, Marbella A. Martínez-Mijares, Romina Baldivieso-Hurtado   +4 more
doaj  

Intelligent Stain‐Free Histology on Structural Colorimetric Nanocavities

Advanced Science, EarlyView.
Chen and Gan et al. introduce a label‐free imaging platform using inexpensive Nanocavity‐on‐Silicon (NOS) slides. These slides transform subtle tissue variations into vivid structural colors, enabling high‐contrast histological imaging under a regular optical microscope. This stain‐free approach reveals morphological details comparable to traditional H&
Qizhe Chen, Yifei Ren, Lijie Hu, Yanyan Li, Wenyue Liang, Jin Wang, Han Gao, Xinhai Wang, Jiajun Li, Qiutao He, Yingfeng Zhu, Haifeng Hu, Qiwen Zhan, Imed Gallouzi, Jasmeen Merzaban, Di Wang, Zunguo Du, Xiaodong Gu, Qiaoqiang Gan   +18 more
wiley   +1 more source

Monoclonal gammopathy presenting with paraproteinemic keratopathy documented with anterior segment OCT: a case report

BMC Ophthalmology
Background Paraproteinemic keratopathy (PPK) is a rare ocular manifestation of monoclonal gammopathies such as monoclonal gammopathy of undetermined significance (MGUS), smoldering multiple myeloma (SMM), and multiple myeloma (MM).
Cyrine Nouira, Wassim Ghazal, Christophe Panthier, Alain Saad, Damien Gatinel   +4 more
doaj   +1 more source

Radical‐Mediated, Substrate‐Independent Fabrication of Hybrid Solid–Hydrogel Materials With Tunable Crosslinking: An Initiator‐ and Crosslinker‐Free Approach

Advanced Science, EarlyView.
This work introduces a substrate‐independent, reagent‐free plasma strategy that forms radical‐rich interlayers for covalent hydrogel attachment without initiators or crosslinkers. The long‐lived radicals drive in situ gelation, creating robust, cytocompatible hybrid solid–hydrogel constructs across diverse substrates.
Ghazal Shineh, Azin Khodaei, Pardis Keikhosravani, Masoud Zhianmanesh, Yiyun Xia, Aaron Gilmour, Sina Naficy, Andrea Guzina, Daniella Bianchi, Khoon S. Lim, Fariba Dehghani, Saber Amin Yavari, Marcela Bilek, Giselle C. Yeo, Behnam Akhavan   +14 more
wiley   +1 more source

Brain‐Adhesive Bioelectronics With Shape‐Morphable and Biodegradable Properties for Stable Brain Signal Monitoring

Advanced Science, EarlyView.
A brain‐adhesive sensor (B‐Sensor) was developed by integrating a self‐healing biodegradable elastomer, a tissue‐adhesive hydrogel, and molybdenum electrodes. The B‐Sensor adheres to brain tissue, conforms to cortical curvatures, and maintains stable electrical performance over the intended period for reliable recording of spatiotemporal brain activity
Heewon Choi, Soeun Kim, Sumin Kim, Jaehyun Park, Soojung An, Sungjun Yoon, Mikyung Shin, Sangho Cho, Donghee Son   +8 more
wiley   +1 more source

An objective assessment of vision performance at different reading distances after smooth incision lenticular keratomileusis (SILK) for myopia

Scientific Reports
Differences in lenticule shapes may impact on the design of future presbyopic treatments with lenticule surgery. Hence, the objective of this study was to assess the depth of field of eyes after smooth Incision Lenticular Keratomileusis (SILK) surgery ...
Rohit Shetty, Pooja Khamar, Raghav Narasimhan, Ritika Mullick, Anushree Bhatkal, Anisha Ramesh, Abhijit Sinha Roy   +6 more
doaj   +1 more source

Refractive surgery beyond 2020

Eye, 2020
M. Ang, D. Gatinel, D. Reinstein, E. Mertens, J. L. Alio del Barrio, J. Alió   +5 more
semanticscholar   +1 more source