منابع مشابه
Age-related changes on the surface of vitreous collagen fibrils.
PURPOSE To determine whether aging vitreous collagen fibrils undergo ultrastructural changes that might underlie vitreous liquefaction and posterior vitreous detachment. METHODS Vitreous collagen fibrils from 21 human subjects (age range, 3-89 years) and from bovine eyes were isolated on electron microscopy grids. Cupromeronic blue labeling in the presence of 0.3 M MgCl(2) and immunogold labe...
متن کاملAge-related changes in dynamic moduli of ovine vitreous.
Multiple rheological studies have characterized the dynamic material properties of adult vitreous, but no studies have investigated vitreous properties in the immature eye. In this study, premature, infant and adult ovine vitreous specimens were tested in shear to identify differences in dynamic moduli with age. Significant inertial artifact and rapid degradation of the vitreous ex vivo hindere...
متن کاملthe evaluation of language related engagment and task related engagment with the purpose of investigating the effect of metatalk and task typology
abstract while task-based instruction is considered as the most effective way to learn a language in the related literature, it is oversimplified on various grounds. different variables may affect how students are engaged with not only the language but also with the task itself. the present study was conducted to investigate language and task related engagement on the basis of the task typolog...
15 صفحه اولAge-related liquefaction of the human vitreous body: LM and TEM evaluation of the role of proteoglycans and collagen.
PURPOSE To evaluate morphologic aspects of age-related liquefaction of the human vitreous body by light and electron microscopy to provide a basis from which future studies directed at the pathogenesis of this phenomenon can be undertaken. The study focuses on changes in fibrillar collagen and proteoglycans (PGs). METHODS Morphologic aspects of intravitreal liquefied spaces and matrix areas s...
متن کاملImportance of vitreous liquefaction in age-related cataract.
PURPOSE Vitrectomy is associated with the rapid progression of nuclear cataracts. This study was conducted to test the hypothesis that age-related liquefaction of the vitreous gel may also be associated with lens opacification. METHODS Lenses from eye bank eyes were graded for nuclear, cortical, and posterior subcapsular opacities, and the amount of liquid vitreous was measured. RESULTS Nuc...
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ژورنال
عنوان ژورنال: Kazan medical journal
سال: 2019
ISSN: 2587-9359,0368-4814
DOI: 10.17816/kmj2018-170