Results 51 to 60 of about 51,382 (262)

Influence of diabetes mellitus on corneal thickness [PDF]

Srpski arhiv za celokupno lekarstvo, 2014
Introduction. Ultrastructural changes in corneas of patients with diabetes mellitus have been previously described. Objective. The aim of this study was to compare central corneal thickness (CDR) values in diabetic patients without retinopathy at the stage of diabetic nonproliferative and proliferative retinopathy and CDR in a control group
Ivan Sencanic, Miroslav Stamenkovic, Vesna Jovanovic, Sinisa Babovic, Vesna Jaksic, Petar Markovic   +5 more
openaire   +3 more sources

The frequency of non-pathologically thin corneas in young healthy adults

Clinical Ophthalmology, 2019
Hannah Rashdan, Manali Shah, Danielle M RobertsonDepartment of Ophthalmology, UT Southwestern Medical Center, Dallas, TX, USAPurpose: Measurement of normal corneal thickness and corneal epithelial thickness is important in keratorefractive surgery ...
Rashdan H, Shah M, Robertson DM
doaj  

Tumbling Magnetic Microrobots for Targeted In Vivo Drug Delivery in the GI Tract

Advanced Robotics Research, EarlyView.
We introduce a microrobot design and integrated system for on‐demand targeted drug release in the gastrointestinal tract. The microrobot has an embedded magnet for actuation with external magnetic fields and is visualized in real time using ultrasound. It has two drug release ports sealed with a thermally sensitive wax. Local heating of the wax using a
Aaron C. Davis, Luis Carlos Sanjuan Acosta, Shubh P. Mehta, Baiyan Qi, Yang Yang, Luis Solorio, Craig J. Goergen, David J. Cappelleri   +7 more
wiley   +1 more source

N, S Co‐Doped Carbon Quantum Dots‐Riboflavin Composite Photosensitizers for Enhanced Iontophoresis‐Assisted Corneal Cross‐Linking

Advanced Science, EarlyView.
This study explores the use of N, S co‐doped carbon quantum dots (NS‐CQDs) as carriers for riboflavin, creating NS‐CQDs‐RF composite photosensitizers. These composites improve riboflavin absorption, enhance ROS generation efficiency, and preserve corneal epithelium integrity.
Tinghong Xu, Yong Liu, Wenjing Zhang, Qiuruo Jiang, Yi Jin, Liangzheng Lin, Lumeng Wang, Zhanhao Gu, Mimi Lin, Shihao Chen   +9 more
wiley   +1 more source

The healing effect of the collagen-glycosaminoglycan copolymer on corneal thinning

BMC Ophthalmology, 2018
Background To study the healing processes of partial thickness wounds in the adult rabbit cornea after grafting a porous collagen-glycosaminoglycan copolymer matrix (CG). Methods In this study, the regeneration of surgically-induced rabbit corneal defect
Shu-Ya Wu, Chien-Yi Pan, Elizabeth P. Shen, I-Shiang Tzeng, Wei-Cherng Hsu   +4 more
doaj   +1 more source

A Circuit of Mechanically Regulated Transcription Factors Balances Regenerative and Fibrotic Memory of Mesenchymal Stromal Cells

Advanced Science, EarlyView.
Producing MSCs on rigid culture substrates induces a scar‐making phenotype, jeapordizing therapeutic success. ‘Tissue‐soft’ surfaces prevent MSC fibrogenesis and preserve regenerative traits. An epigenetic network, driven by HOXA11 and SALL1, maintains ‘soft memory’ by keeping chromatin open in relaxed MSCs, promoting anti‐fibrotic programs.
Fereshteh Sadat Younesi, Andrew E. Miller, Li Diao, Xinying Guo, Natalie Andonian, Elham Karimizadeh, Thomas H. Barker, Boris Hinz   +7 more
wiley   +1 more source

Engineering Approaches to Modify Immunomodulatory Functions of Mesenchymal Stromal Cells (MSCs): Tissue Regeneration and Clinical Application

Advanced Science, EarlyView.
Mesenchymal stromal cells (MSCs) show promise for treating immune‐related disorders through immunomodulation and tissue regeneration. This review gives a brief overview of current clinical approval of MSC therapies. It also discussed how bioengineering, including genetic modification, biomaterial delivery, extracellular vesicles, and iPSC‐derived MSCs,
Sichen Yang, Kejia Li, Ning Wang, Zhen Li, Zhiyong Zhang, Rocky S. Tuan, Yangzi Jiang   +6 more
wiley   +1 more source

Comparison of Corneal Thickness in Candidates for Photorefractive Keratectomy (PRK) Using Three Methods, Orbscan II, Pentacam, and Ultrasound

مجله دانشکده پزشکی اصفهان, 2017
Background: The aim of this study was to compare the central corneal thickness measured by Orbscan II, ultrasound and Pentacam in patients undergoing photorefractive keratectomy (PRK).
Hassan Razmjoo, Shirin Fakhrizadeh
doaj  

Analysis of corneal biometry in a black South African population

African Vision and Eye Health, 2019
Background: Corneal astigmatism and central corneal thickness are important clinical parameters for cataract surgery and glaucoma, respectively. There is very little research on the central corneal thickness and the prevalence and pattern of corneal ...
Thariq Bagus, Kerry Alberto, Michel Muteba, Aubrey Makgotloe   +3 more
doaj   +1 more source

GHRHR Deficiency Enhances Retinal Ganglion Cell Survival and Visual Functions in Experimental Glaucoma by Inhibiting Ferroptosis

Advanced Science, EarlyView.
Glaucoma, a major cause of blindness, involves retinal ganglion cell (RGC) degeneration. This study shows growth hormone‐releasing hormone receptor (GHRHR) deficiency preserves RGC survival and restores vision, unlike activation which only aids survival.
Yan Tong, Ming Ho Yam, Jiaxin Zhang, Lin Du, Linbin Zhou, Yolanda Wong Ying Yip, Bo Man Ho, Hemlata Bisnauthsing, Jiahui Li, Ivan Kong, Shushu Xu, Changzhen Fu, Karl K.H. So, Joaquim S.L. Vong, Ling‐Ping Cen, Ming‐Ming Yang, Khazeema Yousaf, Mai Har Sham, Sun On Chan, Poemen P. Chan, Chi Pui Pang, Clement C. Tham, Jing Na He, Jian Li, Wai Kit Chu   +24 more
wiley   +1 more source