In this function, y is the dependent variable and x is the independent variable. Variable used in an experiment or modelling can be divided into three types:  dependent variable ,  independent variable , or other.
About 70% of men have an eye dominance that matches their handedness. BUT, 30% do not. Most right handers have a dominant right eye and the bulk of southpaws a dominant left. These are the people who are well advised to shoot both eyes open (assuming that they are shooting from their strong shoulder).
convergent strabismus is more commonly referred to as crossed eyes. in this condition, the eyes do not focus together, and one or both eyes turn inward. in divergent strabismus, sometimes called wall eyes, one or both eyes turn outward instead of focusing together.