The overlying retinal blood vessels were abnormal in five cases of congenital hypertrophy of the retinal pigment epithelium. This illustrated the well-recognized association between outer retinal degeneration and obliteration of the overlying retinal vasculature. The proposed pathophysiological mechanisms, however, seem inadequate to explain completely the morphological changes of the retinal b...

The permeability of the ocular blood vessels to sodium fluorescein (NaFl) was evaluated in neonatal and adult cats by fluorescence microscopy. The iris, ciliary body, and choroidal vessels were markedly permeable, whereas the mature and immature retinal vessels were impermeable. Since there is no apparent barrier to NaFl at the level of the iris vessels, the role of those vessels in aqueous for...

PURPOSE Retinopathy of prematurity (ROP) is a potentially blinding vasoproliferative disease. There is no standardized way to quantify plus disease (tortuous and dilated retinal vessels) or characterize abnormal recovery during ROP monitoring. This study objectively studies vascular features in live mice during development using noninvasive retinal imaging. METHODS Using fluorescein angiograp...

Revascularization of the kidney transplant is classically performed by anastomosing renal vessels to recipient iliac vessels. This technique not applicable when are very small, numerous or anomalous and aberrant. In these instances, donor aorta vena cava have be used for vascular anastomosis. It would useful briefly review development use in transplantation during last century discuss potential...

Diabetic retinopathy is a disease, which forms a severe threat on sight. It may reach to blindness among working age people. By analyzing and detecting vasculature structures in retinal image the diabetes can be detected in advanced stages by comparing its states of retinal blood vessels. In blood vessel segmentation approach, computer based retinal image analysis can be used to extract the ret...

The aim of this study was to examine the effects of elcatonin, a synthetic derivative of eel calcitonin, on rat retinal blood vessels, and to determine how diabetes affects the retinal vascular responses. Ocular fundus images were captured with an original high-resolution digital fundus camera in vivo. The retinal vascular responses were evaluated by measuring the diameter of retinal blood vess...

The results of a long-term study (3 to 9 months) of chorioretinal vascular occlusions resulting from injection of latex microspheres of known sizes are reported. Isolated occlusions of small retinal vessels (capillaries and precapillary arterioles) resulted in no histologic changes in the retina. Occlusion of large retinal vessels (arterioles) caused atrophic changes in the inner retinal layers...