Distribution of ocular dominance and effect of image clarity

The purposes of this study were to determine if ocular dominance could be measured and defined in a quantitative and continuous manner, rather than dichotomously, and whether such a measure could be related to image sharpness, or acuity. Ocular dominance .w, as assessed on a dichoptic, but nonrivalry, task for 56 Ss, who were then assigned to groups according to their degree of dominance. Four positive spherical lenses (+0.75, +1.25, +1.75, +2.25) were used to induce differing amounts of refractive error in one eye. Primary results indicate that (1) dominance, as measured, is a continuous function which is normally distributed in the general population, (2) blurring the image in the dominant eye reduces the degree of dominance, and (3) bluring, the image to a nonpreferred eye increases the amount of dominance in the other eye.