Gaze estimation reveals valuable information in terms of human behavior. For example, gaze location can be used as a mean of human computer interaction. In practice, locating the eyes position is a challenging task. Moreover, it is more challenging to estimate the location of the gaze. It requires a system to extract the information of the human eye location then estimate the direction of the gaze. There are existing systems that achieve similar tasks. Many of these systems rely on complex systems, such as wearable sensors or an infrared camera to find the exact focus of eyes gaze. Consequently, these systems are not only complex but also suitable for limited applications. In this paper, we present efficient eye focus methods using a monocular camera, which brings more flexibility and convenience to the system. Three different algorithms for locating the eye's focus have been examined and compared. These algorithms are highly efficient and able to discern the location of the eye's focus in real-time using a regular laptop or desktop computers.