The maintenance of corneal transparency and normal vision is dependent on preservation of epithelial and endothelial cell layer homeostases. Different types of corneal injury can induce swelling and losses in transparency. Fuchs endothelial corneal dystrophy (FECD) is one type of injury that is commonly treated with rho-associated coiled-coil-containing protein kinase (ROCK) inhibitors. While their clinical benefit is apparent, certain aspects of their mechanism of action require clarification. Specifically, although topical eye drops containing ROCK inhibitors have been employed to treat corneal endothelial dysfunction-associated corneal edema, it remains unclear whether interactions between both corneal epithelial and endothelial cell contribute to mitigating clinical signs that compromise normal vision. To address this question, we first review the intricate ROCK signaling pathways and their role in modulating a variety of functions that are related to the maintenance of corneal transparency and normal vision. We also review the results of ongoing clinical trials employing current FDA-approved ROCK inhibitors, highlighting the prominent role of Y-27632 in the treatment of a variety of ocular conditions, particularly FECD, and its promising results in reversing losses in normal vision through facilitating cell proliferation and suppressing apoptosis. This review shows that the ROCK inhibitor clinical benefit is affected by their interactions between the epithelium and the endothelium. This realization makes it likely that ROCK inhibitors will be approved for use in a clinical setting to treat FECD.
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http://dx.doi.org/10.1155/2024/9381303 | DOI Listing |
J Craniofac Surg
December 2024
Division of Plastic and Reconstructive Surgery, R. Adams Cowley Shock Trauma Center.
Retrobulbar hematoma (RH) is a diagnostic and therapeutic emergency that may cause permanent vision loss. Lateral canthotomy and cantholysis (LCC) is typically performed when IOP is elevated or vision is compromised. The authors describe the outcomes of the largest cohort of patients with RH to date.
View Article and Find Full Text PDFIEEE Trans Inf Theory
December 2024
Department of CISE, University of Florida, Gainesville, FL 32611 USA.
Distributional approximation is a fundamental problem in machine learning with numerous applications across all fields of science and engineering and beyond. The key challenge in most approximation methods is the need to tackle the intractable normalization constant present in the candidate distributions used to model the data. This intractability is especially common for distributions of manifold-valued random variables such as rotation matrices, orthogonal matrices etc.
View Article and Find Full Text PDFBrain Commun
December 2024
Division of Neurology, Department of Medicine, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok 10400, Thailand.
Following a unilateral post-chiasmal lesion of the geniculo-striate pathway, patients develop homonymous visual field defects. Using classical perimetry, patients with 'complete' homonymous hemianopia are unaware of stimuli in the affected hemifield. However, some show preserved vision in the affected hemifield in which the conscious perception of moving stimuli is preserved (Riddoch phenomenon).
View Article and Find Full Text PDFMed Phys
December 2024
Faculty of Applied Sciences, Macao Polytechnic University, Macao, China.
Background: Amide proton transfer weighted (APTw) imaging has demonstrated extensive clinical applications in diagnosing, treating evaluating, and prognosis prediction of breast cancer. There is a pressing need to automatically segment breast lesions on APTw original images to facilitate downstream quantification, which is however challenging.
Purpose: To build a segmentation model on the original images of APTw imaging sequence by leveraging the varying contrasts between breast lesions and their surrounding glandular and fat tissues displayed on the original images of APTw imaging at different frequency offsets.
Vis Neurosci
December 2024
Stanford University, Department of Psychology Stanford, CA, USA.
Recent reports suggest the ON and OFF pathways are differentially susceptible to selective vision loss in glaucoma. Thus, perimetric assessment of ON- and OFF-pathway function may serve as a useful diagnostic. However, this necessitates a developed understanding of normal ON/OFF pathway function around the visual field and as a function of input intensity.
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