نتایج جستجو برای: corneal biomechanic
تعداد نتایج: 28495 فیلتر نتایج به سال:
purpose: to evaluate the adverse effects of intravitreal injection of sterile chloramphenicol eye drops on corneal endothelial cells of donated corneas. methods: 100 donor corneas were enrolled in the study. one eye of each donor underwent intravitreal injection of sterile chloramphenicol eye drops following vitreous tap and the fellow eyes were served as controls. after corneo-scleral excision...
corneal transplantation is the most common and successful form of solid organ transplantation with a 2-year survival rate of over 90% in low risk cases. this high success rate may be due to the immune privileged status of the cornea, acaid (anterior chamber associated immune deviation) induction phenomena and secretion of inhibitory molecules by corneal cells such as il1-ra, il-1a and fas ligan...
the objectives of this study were to define the clinical risk factors, microbiological spectrum, and visual outcome of bacterial keratitis at shahid sadoughi hospital (yazd, iran). a crosssectional prospective study, identified 80 cases of microbial keratitis from march 1999 to march 2001. inclusion criteria were presence of corneal stromal infiltrate in slit lamp examination, and microbiologic...
Wrinkle simulation with skin modeling and deformation are extremely important in enhancing the realism of human figure models. In this paper we present a model which simulates the skin deformation based on a biomechanic model and generates dynamic wrinkles rendered with texture image. The biomechanical model considers the skin as a membrane undergoing large deformations and puts the local coord...
The purpose of this study was to evaluate posterior corneal surface variation after femtosecond laser-assisted keratomileusis in patients with myopia and myopic astigmatism. Patients were evaluated by corneal tomography preoperatively and at 1, 6, and 12 months. We analyzed changes in the posterior corneal curvature, posterior corneal elevation, and anterior chamber depth. Moreover, we explored...
Prof. Leonardo Mastropasqua is Director at the National High-Tech Eye Center, Ophthalmology Clinic, Department of Medicine and Aging Science, University G. D’Annunzio Chieti-Pescara, Chieti, Italy. In following editorial, talk about prospects for corneal lenticule implantation. Mario Nubile Associate Professor same faculty. Both are specialized in corneal, cataract refractive surgery focus on i...
The basic anatomic and physiologic properties of human upper extremity muscles have been elucidated using a novel intraoperative sarcomere length measuring device in conjunction with quantitative anatomic and biomechanic models of these same muscles. We reviewed the genesis of these studies which began with development of the optical tools, validation using animal models, and application to hum...
OBJECTIVE To evaluate the effects of the intrastromal corneal ring, a device developed to reduce myopia, on corneal asphericity in a large set of eye bank eyes. METHODS Forty-one deturgesced eye bank eyes were implanted with intrastromal corneal rings of five different thicknesses, ranging from 0.25 mm to 0.45 mm. Corneal asphericity, before and after implantation, was examined using two diff...
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