Results 71 to 80 of about 400,914 (301)

Vision and Foraging in Cormorants: More like Herons than Hawks? [PDF]

open access: yes, 2007
Background Great cormorants (Phalacrocorax carbo L.) show the highest known foraging yield for a marine predator and they are often perceived to be in conflict with human economic interests.
A Gislén   +38 more
core   +4 more sources

Selective Laser Sintering 3D Printing of Drug‐Loaded Intravitreal Implants

open access: yesAdvanced Functional Materials, EarlyView.
Selective laser sintering enables the fabrication of biodegradable and biocompatible intravitreal implants with tunable microstructures for sustained drug delivery. By modulating laser scanning speed, the polymer matrix architecture is engineered to control the release kinetics of dexamethasone and riboflavin over several months. This approach offers a
Iria Seoane‐Viaño   +5 more
wiley   +1 more source

Evaluation of the shape symmetry of bilateral normal corneas in a Chinese population.

open access: yesPLoS ONE, 2013
PurposeTo investigate the bilateral symmetry of the global corneal topography in normal corneas with a wide range of curvature, astigmatism and thickness values.DesignCross-Sectional Study.MethodsTopography images were recorded for the anterior and ...
Fangjun Bao   +7 more
doaj   +1 more source

Engineering Extracellular Microenvironments: The Impact of Fibrous Materials on Cell Behavior

open access: yesAdvanced Healthcare Materials, EarlyView.
Fibrous structures are key elements of the native extracellular matrix and crucial for directing cell behavior. This review discusses how fiber properties such as composition, diameter, and alignment affect cell responses in 2D and 3D systems. Strategies for integrating fibrous cues into engineered tissues are highlighted, and future directions for ...
Zan Lamberger, Gregor Lang
wiley   +1 more source

Diagnosis of keratoconus with optical coherence tomography

open access: yesJournal of the Egyptian Ophthalmological Society, 2016
Purpose The aim of the study was to assess the accuracy of optical coherence tomography (OCT) (3D OCT-2000) in diagnosing keratoconus by measuring the central corneal thickness and the central curvature radius.
Mortada A Abozaid, Ashraf M Mohammed
doaj   +1 more source

A New Parameter in The Etiology of Hyperopic Anisometropic Amblyopia: Corneal Densitometry

open access: yesJournal of Ophthalmology, 2020
Objectives. To evaluate the anterior segment parameters and densitometric values of cornea and lens in children with anisohipermetropic amblyopia by corneal topography and optical biometry devices. Design.
Erdin Bozkurt   +3 more
doaj   +1 more source

Repeatability of Ophtha Top topography and comparison with IOL-Master and LenstarLS900 in cataract patients [PDF]

open access: yesInternational Journal of Ophthalmology, 2017
AIM: To determine the repeatability of Ophtha Top topography and assess the consistency with intraocular lens (IOL)-Master and LenstarLS900 (Lenstar) in measuring corneal parameters among cataract patients.
Sha-Sha Yu, Hui Song, Xin Tang
doaj   +1 more source

Practical Guide to the Design of Granular Hydrogels for Customizing Complex Cellular Microenvironments

open access: yesAdvanced Healthcare Materials, EarlyView.
Granular hydrogels are emerging microporous platforms for cell culture and delivery, showing great potential for replicating the complex, heterogeneous environments found in natural tissues. This review outlines the design principles of granular hydrogels, highlighting critical factors that determine the final physicochemical properties of the entire ...
Shuhan Feng, Kaiyang Chen, Shiqi Wang
wiley   +1 more source

Densitometric analysis of cornea in patients with neovascular age-related macular degeneration after intravitreal aflibercept loading dose

open access: yesTherapeutic Advances in Ophthalmology, 2020
Purpose: To evaluate the anatomic changes in the cornea and anterior segment following intravitreal aflibercept loading dose for neovascular age-related macular degeneration. Methods: The study included 40 eyes of 40 patients with neovascular age-related
Cemile Ucgul Atilgan   +4 more
doaj   +1 more source

Differentiating Keratoconus and Corneal Warpage by Analyzing Focal Change Patterns in Corneal Topography, Pachymetry, and Epithelial Thickness Maps

open access: yesInvestigative Ophthalmology and Visual Science, 2016
Purpose To differentiate between keratoconus and contact lens-related corneal warpage by combining focal change patterns in anterior corneal topography, pachymetry, and epithelial thickness maps. Methods Pachymetry and epithelial thickness maps of normal,
M. Tang   +5 more
semanticscholar   +1 more source

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