Results 91 to 100 of about 1,605,305 (323)

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 Proof‐of‐Concept Assessment of a Novel Wearable Eyelid Muscle Device: A Pre‐Clinical Animal Cadaver Study for Eyelid Closure Restoration

Advanced Robotics Research, EarlyView.
This article introduces a soft wearable eyelid sling device incorporating a hydraulic soft artificial muscle (SAM) for achieving complete closure of an eyelid. The SAM is driven by a cam mechanism that provides a displacement profile closely matched with those of a healthy eyelid.
Patrick Pruscino, Phuoc Thien Phan, James Davies, Bibhu Sharma, Tianruo Guo, Chi Cong Nguyen, Nigel H. Lovell, Thanh Nho Do   +7 more
wiley   +1 more source

Rapid and Accurate Pressure Sensing Device for Direct Measurement of Intraocular Pressure. [PDF]

, 2020
PurposeIntraocular pressure (IOP) is the primary modifiable risk factor for glaucoma. Current devices measure IOP via the dynamic response of the healthy cornea and do not provide the accurate IOP measurements for patients with altered corneal ...
Camp, Andrew, Friend, James, Gopesh, Tilvawala, Unanian, Michael, Weinreb, Robert N   +4 more
core  

3D Printing of Soft Robotic Systems: Advances in Fabrication Strategies and Future Trends

Advanced Robotics Research, EarlyView.
Collectively, this review systematically examines 3D‐printed soft robotics, encompassing material selections, function integration, and manufacturing methodologies. Meanwhile, fabrication strategies are analyzed in order of increasing complexity, highlighting persistent challenges with proposed solutions.
Changjiang Liu, Bin Cui, Xumin Huang, Xiaoyu (Rayne) Zheng, T. Thang Vo‐Doan, Ruirui Qiao   +5 more
wiley   +1 more source

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

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

Myopes have significantly higher serum melatonin concentrations than non-myopes [PDF]

, 2017
Purpose Experimental animal models of myopia demonstrate that higher melatonin (Mel) and lower dopamine (DA) concentrations actively promote axial elongation.
Ackermann, Atkinson, Ayaki, Baba, Barnard, Beck-Friis, Benavente-Pérez, Benloucif, Berg, Bertolet, Besharse, Breslin, Brown, Cahill, Chang, Chiba, Chua, Delgado, Dong, Eisenberg, Fan, Freedman, Guo, Hammond, He, Hua, Huang, Huang, Hughes, Iuvone, Jee, Kivelä, Lanyon, Logan, Lu, Mallen, Mao, Martin, McCullough, Megaw, Megaw, Nickla, Nickla, Ohngemach, Panda, Pendrak, Rada, Rao, Riefahn, Rohrer, Rose, Rudnicka, Sankaridurg, Skene, Stone, Stone, Stormann, Tosini, Trier, Verkicharla, Wahl, Wallman, Wang, Weiss, Wiechmann, Wiechmann, Wilson, Witkovsky, Wu, Xu, Zhang   +70 more
core   +2 more sources

Partial thickness corneal tissue as a patch graft material for prevention of glaucoma drainage device exposure

BMC Ophthalmology, 2016
BackgroundTo protect from erosion of the tube in glaucoma drainage device (GDD), the tube is covered by a biologic tissue which is roofed by the conjunctiva. Sclera, pericardium, dura mater and cornea are available as a patch graft.
O. Spierer, M. Waisbourd, Y. Golan, Hadas Newman, Rony Rachmiel   +4 more
semanticscholar   +1 more source

Biodegradable Carbonate Nanogels Loaded with Anti MFAP‐5 siRNA for Anti‐stromal Therapy of Hepatocellular Carcinoma

Advanced Science, EarlyView.
Polycarbonate nanogels enable lipid‐free delivery of anti‐MFAP‐5 siRNA into cancer‐associated fibroblasts (CAF) in hepatocellular carcinoma. In a cirrhotic murine model, this approach silences MFAP‐5, reduces fibroblast activation, and suppresses tumor growth by inhibiting NOTCH/Hes1‐driven angiogenesis. CAF‐targeted MFAP‐5 RNAi and conserved signaling
Paul Schneider, Alexander Fuchs, Michael Fichter, Vanessa Bolduan, Jenny Schunke, Özlem Akilli, Nádia C. Correia, Yannick Ehlers, Christian Czysch, Pia Winterwerber, Eliana Stanganello, Barbara Schrörs, Mustafa Diken, Christoph Eckert, Shusruto Rishik, Andreas Keller, Jörn M. Schattenberg, Stephan Grabbe, Matthias Bros, Lutz Nuhn, Leonard Kaps   +20 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