Results 61 to 70 of about 385,906 (239)
Corneal Pachymetry by AS-OCT after Descemet's Membrane Endothelial Keratoplasty [PDF]
arXiv, 2021 Corneal thickness (pachymetry) maps can be used to monitor restoration of corneal endothelial function, for example after Descemet's membrane endothelial keratoplasty (DMEK). Automated delineation of the corneal interfaces in anterior segment optical coherence tomography (AS-OCT) can be challenging for corneas that are irregularly shaped due to ...
arxiv
Nanotherapy for Neural Retinal Regeneration
Advanced Science, EarlyView.Nanotechnology enhances ophthalmic treatments by improving drug delivery and regenerating ocular tissues, combating vision loss from retinal diseases through innovative nano‐systems. This review outlines ocular anatomy, pathology, immune microenvironment, and barriers, detailing nanocarrier characteristics, classification, and preparation methods, and ...
Chuyao Yu +11 more
wiley +1 more source
Assessment of Biomechanical Properties for Corneal Post Refractive Surgery [PDF]
arXiv, 2022 A stable shape for corneas experiencing refractive surgery has to be sustained so as to elude post-refractive surgery de-compensation. This de-compensation leads to visual complications and unsatisfactory procedure recovery. Variation in corneal lamellae and collagen fibres is induced by recent LASER refractive surgical procedures utilizing LASER ...
arxiv
Investigative 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
Advanced Science, EarlyView.Humanized corneal stroma‐like adhesive patches (HCSPs) are developed for lamellar keratoplasty and corneal perforation repair. HCSPs exhibit histological, optical, and biomechanical characteristics similar to those of the natural cornea, with improved wet tissue adhesion, anti‐degradation, and anti‐swelling capabilities compared to conventional tissue ...
Long Zhao +9 more
wiley +1 more source
Severe Corneal Morphological Alterations after Excimer Laser Surface Ablation for a High Astigmatism
Case Reports in Ophthalmology, 2021 We report long-term alterations of anterior corneal stroma after excimer laser surface ablation for a high astigmatism. The patient claimed progressive visual loss in his right eye (RE) during the last 3 years after bilateral laser-assisted subepithelial
Anna M. Roszkowska +4 more
doaj +1 more source
In vivo Optical Coherence Elastography Reveals Spatial Variation and Anisotropy of Corneal Stiffness [PDF]
arXiv, 2023 Objective: The mechanical properties of corneal tissues play a crucial role in determining corneal shape and have significant implications in vision care. This study aimed to address the challenge of obtaining accurate in vivo data for the human cornea.
arxiv
Non-invasive detection of nanoscale structural changes in cornea associated with cross-linking treatment [PDF]
, 2020 Corneal cross-linking (CXL) using UVA irradiation with a riboflavin photosensitizer has grown from an interesting concept to a practical clinical treatment for corneal ectatic diseases globally, such as keratoconus. To characterize the corneal structural changes, existing methods such as X-ray microscopy, transmission electron microscopy (TEM ...
arxiv +1 more source
A Molecularly Defined Medullary Network for Control of Respiratory Homeostasis
Advanced Science, EarlyView.The dynamic interplay between central respiratory chemoreceptors and the respiratory central pattern generator is essential for maintaining stable respiratory rhythm and patterns, particularly during sleep. This study offers novel insights into the anatomical, molecular, and functional characteristics of a medullary network involving the nucleus ...
Tianjiao Deng +16 more
wiley +1 more source
On the Automated Detection of Corneal Edema with Second Harmonic Generation Microscopy and Deep Learning [PDF]
arXiv, 2022 When the cornea becomes hydrated above its physiologic level it begins to significantly scatter light, loosing transparency and thus impairing eyesight. This condition, known as corneal edema, can be associated with different causes, such as corneal scarring, corneal infection, corneal inflammation, and others, making it difficult to diagnose and ...
arxiv