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Abstract: This paper represents an implementation of developing an algorithm for controlling the movement of computer screen using the Iris movement. By accurately detecting the position of the iris in eye and mapping that to a specific position on the computer screen. These techniques were implemented by analyzing the coordinates of face and the eyes. An OpenCV based model that analyzes the movement of the Iris, with the aid of a camera and positions the cursor in accordance to the movement of Iris is being designed. Also, we are going to represent the development of a virtual keyboard which works by detecting eye gaze and eye blinking. For this, a system has been built that captures video directly from PC camera and detects human face and eye. It also detects eye gaze as left or right to select keyboard section and eye blinking to select the desired key from the virtual keyboard. This system will prove to be a boon for differently abled person to control the screen by simply using eye gaze. It will also help them to type without using finger or hands. Such types of application are important and blessings for those people who completely lost the control of their limbs. Key Word: HCI; GUI; iris. References [1] W.-K. Chen, Linear Networks and Systems (Book style).Belmont, CA: Wadsworth, 1993, pp. 123–135. [2] H. Poor, An Introduction to Signal Detection and Estimation. New York: Springer-Verlag, 1985, ch. 4. [3] B. Smith, “An approach to graphs of linear forms (Unpublished work style),” unpublished. [4] E. H. Miller, “A note on reflector arrays (Periodical style—Accepted for publication),” IEEE Trans. Antennas Propagat., to be published. [5] J. Wang, “Fundamentals of erbium-doped fiber amplifiers arrays (Periodical style—Submitted for publication),” IEEE J. Quantum Electron., submitted for publication. [6] C. J. Kaufman, Rocky Mountain Research Lab., Boulder, CO, private communication, May 1995. [7] Y. Yorozu, M. Hirano, K. Oka, and Y. Tagawa, “Electron spectroscopy studies on magneto-optical media and plastic substrate interfaces(Translation Journals style),” IEEE Transl. J. Magn.Jpn., vol. 2, Aug. 1987, pp. 740–741 [Dig. 9th Annu. Conf. Magnetics Japan, 1982, p. 301]. [8] M. Young, The Techincal Writers Handbook. Mill Valley, CA: University Science, 1989. [9] (Basic Book/Monograph Online Sources) J. K. Author. (year, month, day). Title (edition) [Type of medium]. Volume(issue). Available: http://www.(URL) [10] J. Jones. (1991, May 10). Networks (2nd ed.) [Online]. Available: http://www.atm.com