Neovascularization after retinal branch vein occlusion (RBVO) has long been recognized (Foster Moore, 1924; Jensen, 1936) and it has been noted more recently in a number of publications. Krill, Archer, and Newell (I97I) found that three out of 14 patients had new vessel formation after RBVO; Michels and Gass (1974) found seven cases of retinal new vessels in 28 eyes and disc new vessels in two ...

Retinal vessels are directly accessible to clinical observation. This has numerous potential interests for medical investigations. Using the Retinal Vessel Analyzer, a dedicated eye fundus camera enabling dynamic, video-rate recording of micrometric changes of the diameter of retinal vessels, we developed a semi-automated computer tool that extracts the heart beat rate and pulse amplitude value...

Neural oscillations play an important role in normal brain activity, but also manifest during Parkinson's disease, epilepsy, and other pathological conditions. The contribution of these aberrant oscillations to the function of the surviving brain remains unclear. In recording from retina in a mouse model of retinal degeneration (RD), we found that the incidence of oscillatory activity varied ac...

Retinal vessel segmentation is an indispensable step for automatic detection of retinal diseases with fundoscopic images. Though many approaches have been proposed, existing methods tend to miss fine vessels or allow false positives at terminal branches. Let alone undersegmentation, over-segmentation is also problematic when quantitative studies need to measure the precise width of vessels. In ...

Retinopathy of Prematurity (ROP) is an infant disease characterized by increased dilation and tortuosity of the retinal blood vessels. Automatic tortuosity evaluation from retinal digital images is very useful to facilitate an ophthalmologist in the ROP screening and to prevent childhood blindness. This paper proposes a method to automatically classify the image into tortuous and non-tortuous. ...

BACKGROUND Recently it was shown that retinal vessel diameters could be measured using spectral domain optical coherence tomography (OCT). It has also been suggested that retinal vessels manifest different features on spectral domain OCT (SD-OCT) depending on whether they are arteries or veins. Our study was aimed to present a reliable SD-OCT assisted method of differentiating retinal arteries ...

ARTERIO-SCLEROTIC vessels are clinically and histologically important. I have studied retinal material, especially the tissue of fatty change for a great number of years. The chemical nature of the fat is still practically unknown. I have now studied sclerosed retinal arteries systematically. First I examined the unstained tissue, then I used the technique of retina in bulk. Later I combined th...

Retinal degeneration leads to progressive photoreceptor cell death, resulting in vision loss. Subsequently, inner retinal neurons develop aberrant synaptic activity, compounding visual impairment. In retinal ganglion cells, light responses driven by surviving photoreceptors are obscured by elevated levels of aberrant spiking activity. Here, we demonstrate in rd10 mice that targeting disruptive ...

Dysphagia lusoria is the compression of esophagus caused by congenital vascular anomalies. usually develops in childhood, but also later life when aberrant vessels show atherosclerotic changes. Here we would like to present a case 64-year-old patient who suffers from increasing globus sensation and swallowing disorder.

INTRODUCTION The retina is nourished by two separate blood supplies, the retinal and choroidal vessels. The retinal vessels are located in the inner retina closest to the vitreous. The choroidal vessels are located outside the outer retina, sandwiched between the retinal pigment epithelium and the sclera. The photoreceptor layer in between the two vascular layers does not contain any vessels (7...