Abstract: The review paper describes various image processing techniques for optic cup and disc segmentation for automatic detection of glaucoma. Glaucoma is the second leading cause of blindness that can damage the eye’s optic nerve, resulting in loss of vision and thereby cause permanent blindness. This disease cannot be cured, hence detecting the disease in time is important. Current diagnosis of glaucoma relies upon examining retinal fundus image using image processing. Optic nerve head assessment in retinal fundus images is a promising method wherein optic cup and optic disc are segmented. The segmented optic disc and optic cup are then used to compute the Cup to Disc Ratio (CDR) for glaucoma screening.
Keywords: Fundus Image, Glaucoma, Optic nerve head, optic cup, optic disc, CDR.