hard exudates

hard exudates

discrete, yellow-white lipid particles characteristic of background retinopathy with diabetic eye disease; hard exudates on the macula cause blindness
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Probabilistic Neural Network(PNN), Decision Tree (DT) and Support Vector Machine(SVM) For Optimization Techniques Genetic Algorithm and Particle Swarm Optimization [4] Diabetic Machine Learning Classifiers retinopathy [3] Microaneurysms Hybrid Classifier combines Gaussian Mixture Mode(GMM) and Support Vector Machine(SVM) [5] Bright Lesions Linear Support Vector Machine(SVM) [6] Hard Exudates Dynamic threshold, edge detection Paper Database Obtained Result No [1] DRIVE Obtained Accuracy of DiaRetDB1 DRIVE=100% DMED DiaRetDB 1=100% STARE DMED=98.
The ETDRS defined DME as retinal thickening or presence of hard exudates within 1 DD of the centre of the macula.
It has been postulated that an increase in blood viscosity and alterations in the fibrinolytic system, incorporation of triglycerides into the cell membrane and endothelial dysfunction occur in hyperlipidemia and lead to the formation of hard exudates, haemorrhage and odema in the retina.
Retinopathy changes such as hard exudates (shiny lesions) were detected very easily by nonmydriatic camera although retinal hemorrhages, fine new vessels, and cotton wool spots were difficult to identify.
While the intraretinal lesions include; hemorrhages, hard exudates (these are lipoproteins located at the margin between healthy and edematous retina), and retinal fibrosis and disciform degenerative scars.
DME absent###No retinal thickening or hard exudates present in posterior pole
DME was scored separately for each eye on a scale of 0 (none) through 3 (retinal thickness or adjacent hard exudates within 500 mcm of the center of the macula).
Active learning approach for detection of hard exudates, cotton wool spots, and drusen in retinal images//Medical Imaging 2009: Computer-Aided Diagnosis, 2009--P.
5%; number needed to treat [NNT] =10), fewer hard exudates, fewer cotton-wool spots, less progression of retinopathy, and less need for photocoagulation.
Fundo scopy was done by retinal camera for any evidence of diabetic retinopathy including micro aneurysms, dot and blot hemorrhages, soft and hard exudates, venous looping and beading, new vessel formation and maculopathy.
Hard exudates within 500 micron of the fovea, if associated with adjacent retinal thickening.
Focal macular edema is characterized by fluorescein leakage from certain capillary areas, and it may be surrounded by hard exudates (circinate exudates) that are yellow to white in color and contain lipoprotein remnants of plasma extravasation from microaneurysms.