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Prolonged diabetes causes severe damage to the vision through leakage of blood and blood constituents over the retina. The effect of the leakage becomes more threatening when these abnormalities involve the macula. This condition is known as diabetic maculopathy and it leads to blindness, if not treated in time. Early detection and proper diagnosis can help in preventing this irreversible damage....
Patients suffering from Diabetic Retinopathy are at a high risk of sight threatening disease, the Diabetic Maculopathy. It gets initiated with the deposition of lesions formed from blood constituents, in a region of one optic disc diameter centered at fovea of retina. The effect becomes vision threatening when the deposition of the lesions spread close to fovea. These lesions are of two types, namely...
For the diagnosis of several retinal diseases, such as Diabetic Retinopathy (DR), Diabetic Macular Edema (DME), Age-related Macular degeneration (AMD) detection of macula and fovea is considered as an important prerequisite. If any abnormality like haemorrhages, exudates fall over macula then vision is severely effected and at higher stage people may become blind. In this paper a new approach for...
Accumulation of blood and its constituents over fovea of the retina lead to irreversible vision degradation in Diabetic Retinopathy (DR). Thus, fovea location contains very vital information in automated analysis. In this study, we have developed a simple approach for identification of fovea location. The main advantage of the method is that it does not require prior knowledge of the spatial relationship...
Diabetes has become a life threatening disease. The effect of diabetes on human retina is called Diabetic Retinopathy (DR). If DR involves macula, it is known as maculopathy. Under this condition, the visibility of the patient gets affected adversely. In this paper, we have proposed a method for grading the stages of maculopathy. In the first stage, the abnormalities are detected. Second stage consists...
Diabetic retinopathy causes blindness due to the physiological changes in the retina of human eye, which occurs due to the progression of diabetes. Diabetic retinopathy images differ from normal fundus images by lesions such as: microaneurysm, hemorrhages, exudates, cotton wool spots and variations in blood vessels etc. Appearance of these features on the retina leads to vision loss. The sharp vision...
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