Discernment of Glaucoma

Glaucoma is a chronic eye disease which leads to vision loss. It is a silent theft of sight. Early detection of glaucoma can potentially reduce the risk of blindness. However many patients are unaware of the disease, because it progresses slowly without easily noticeable symptoms. In recent studies, there is no effective method for low-cost population-based glaucoma detection or screening. In this work, the propose method is cup to disc ratio (CDR) assessment, using 2-D retinal fundus images. First, the image is pre-processed by converting the image into HSI and applying the filter. Followed by, the optic disc is first located and segment out the optic disc position and identify the optic disc and optic cup and reconstructed using a novel sparse dissimilarity-constrained coding (SDC) approach Subsequently, the reconstruction coefficients from the SDC are used to compute the (CDR) Cup to Disc Ratio for the testing disc. In this work glaucoma is discernment with low cost.