Figure 6.

Scatterplot of Letter-Size Magnification vs. Viewing-Distance Magnification for 75 low-vision subjects. The diagonal dashed line represents equal contributions of the two forms of magnification. A subject’s overall magnification is the product of Letter-Size Magnification and Viewing-Distance Magnification, and represents the ratio of angular print size to the angular print size used by normally sighted controls. The open triangles, squares and circles show data for computer, tablet and smartphone displays, respectively.