نتایج جستجو برای: corneal diseases

تعداد نتایج: 870191  

2016
Bin Kong Shengli Mi

Corneal diseases constitute the second leading cause of vision loss and affect more than 10 million people globally. As there is a severe shortage of fresh donated corneas and an unknown risk of immune rejection with traditional heterografts, it is very important and urgent to construct a corneal equivalent to replace pathologic corneal tissue. Corneal tissue engineering has emerged as a practi...

Journal: :Investigative ophthalmology & visual science 2014
Jakob Nikolas Kather Jens Kroll

Corneal neovascularization (NV) refers to the growth of blood vessels and/or lymphatics into the physiologically avascular cornea, which occurs in several pathological processes. In mouse models, corneal NV can be artificially induced to investigate mechanisms of corneal pathologies. However, mouse models of corneal NV are not restricted to cornea-specific research, but also are widely used to ...

2016
Sailaja Bondalapati Kay Khine Maya Bitar David Chesnutt Richard M. Davis

We report a rare case of association of temporal arteritis with recurrent central corneal ulcer. A 91-year-old male with a remote history of clinically diagnosed giant cell arteritis (GCA) and penetrating keratoplasty (PK) for corneal edema in 1990’s in the left eye presented with irritation and severe dry eye. He progressively developed central corneal ulcer regardless of treatment with aggres...

Journal: :Regenerative medicine 2016
Matthias Fuest Gary Hin-Fai Yam Gary Swee-Lim Peh Jodhbir S Mehta

Corneal integrity is essential for visual function. Transplantation remains the most common treatment option for advanced corneal diseases. A global donor material shortage requires a search for alternative treatments. Different stem cell populations have been induced to express corneal cell characteristics in vitro and in animal models. Yet before their application to humans, scientific and et...

Journal: :Journal of biomedical optics 2017
Angela Damian Berthold Seitz Achim Langenbucher Timo Eppig

Vision loss due to corneal injuries or diseases can be treated by transplantation of human corneal grafts (keratoplasty). However, quality assurance in retrieving and cultivating the tissue transplants is confined to visual and microbiological testing. To identify previous refractive surgery or morphological alterations, an automatic, noncontact, sterile screening procedure is required. Twenty-...

Journal: :Investigative ophthalmology & visual science 2011
Don Yuen Bronek Pytowski Lu Chen

PURPOSE Lymphangiogenesis (LG) accompanies many corneal diseases after inflammatory, infectious, or chemical insults and is a primary mediator of transplant rejection. The purpose of this study was to investigate whether there is a time window for therapeutic intervention of corneal LG and whether a combined blockade of VEGFR-2 and VEGFR-3 effectively suppresses early-, middle-, or late-stage L...

2016
Yoichi Iwafuchi Tetsuo Morioka Yuko Oyama Kandai Nozu Kazumoto Iijima Ichiei Narita

Many types of inherited renal diseases have ocular features that occasionally support a diagnosis. The following study describes an unusual example of a 40-year-old woman with granular corneal dystrophy type II complicated by renal involvement. These two conditions may coincidentally coexist; however, there are some reports that demonstrate an association between renal involvement and granular ...

2004
AHMED M ABU

The effect of interferon-gamma on the expression in situ of major histocompatibility complex (MHC) products in human corneas was studied in vitro. Incubation for four days with 5 or 50 mg/l of Escherichia coli-derived recombinant human interferon-gamma resulted in the appearance de novo of MHC class II or HLA-DR antigens on variable numbers of corneal epithelial cells as well as on corneal endo...

2011
Vassilios Kozobolis Georgios Labiris Maria Gkika Haris Sideroudi

Corneal collagen cross-linking (CxL) is a prevalent surgical method for the management of keratoconus. However, literature suggests that, further to keratoconus, CxL has a beneficial impact on a series of corneal related diseases and states. This article attempts to provide a contemporary review for all additional applications of CxL. Specifically, it outlines the most recent studies that demon...

2012
Jing Lin Kyung-Chul Yoon Lili Zhang Zhitao Su Rong Lu Ping Ma Cintia S. De Paiva Stephen C. Pflugfelder De-Quan Li

Tissue engineering holds great promise for corneal transplantation to treat blinding diseases. This study was to explore the use of natural corneal stroma as an optimal substrate to construct a native like corneal equivalent. Human corneal epithelium was cultivated from donor limbal explants on corneal stromal discs prepared by FDA approved Horizon Epikeratome system. The morphology, phenotype,...

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