Abstract: A visual aid for use in a ball game, such as golf, consists of a ball or disc on which a ball can be placed provided with markings on the surface comprising cross-hairs and a circle, which circle in the case of the ball is of a smaller diameter than the diameter of the ball or in the case of the disc is equal to or greater in diameter than the diameter of the golf ball so as to be used in combination with the periphery of the ball to enable the player to position the player's eyes relative to the ball and in respect of the cross-hairs facilitate the adoption by the player of a targeted mode of vision as well as facilitating the alignment of the direction in which the golf ball is to be propelled.