I. Introduction
Eyes are the unique vision gland in the human body and many people are suffering from eye disorder causing vision impairments. Cataract is one of the most prevalent eye diseases which is the frequent reason for blindness. Fig. 1 shows a retinal fundus image which represents the normal retinal fundus image that visible the capillaries and vascular cell (Fig. 1a). Fig. 1b shows a cataract image in which capillaries and vascular are not visible due to blurriness. At this stage, vision is lost in most of the people.