Detection of Glaucoma using Cup-to-Disc Ratio and Blood Vessels Orientation
Keywords:
Glaucoma, Optic Cup, Optic Disc, Cup-To-Disc Ratio, Fundus Images, Blood VesselsAbstract
Glaucoma is a disorder of that result in the injury to the optic nerve of the eye due to increased in the Intra Ocular Pressure (IOP). It can damage the optic nerve asymptotically, lead to vision impairment and progress into permanent blindness if it is not treated early. In the proposed work, the presence of glaucoma is detected by analysing the fundus images. The work includes method for segmentation of the retinal optic cup (OC) and the disc. The size and shape of the optic cup are measured. The Cup-to-Disc Ratio (CDR) is computed. The blood vessels present inside the optic disc (OD) are also segmented and their orientation is analysed which strengthens the accuracy of the detection. The input images are classified as glaucomatous or normal based on the combined results of CDR and blood vessel orientation. DRIONS database images are used to carry out the experimentation, the outcomes are optimistic. The accuracy obtained is 96%.
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