Analysis of different automatic cataract detection and classification methods

The Human eyes are the most complicated organ, having ideal and interconnected subsystems namely pupil, iris, lens, retina, cornea and optic nerve. Cataract is one of the major health problems that occur mainly in the old age. Protein layer will develop gradually in the eyes and the lens become cloudy over a long time period. This reduces vision and leads to blindness. There are various Automatic Cataract detection and classification methods available today. All the Cataract detection and classification systems have 3 basic steps: Preprocessing, Feature extraction and Classification. In this paper some of the recent methods are discussed and analyzed.