Figure 1.

Schematic illustration of the study protocol for two parts of the experiment. Question 1 included one visit, where myopic subjects read inverted contrast “large” text and watched a movie with imposed positive defocus. Question 2 included two visits for separate testing the effects of “small” and “large” text, presented at standard and inverted contrast polarity. Before each task, a washout period of 10 minutes was imposed to eliminate possible influences of previous activities. Before and after each viewing task, axial length was measured. The order of the visits and viewing tasks was randomized. The spectacle symbol denotes conditions where positive defocus was imposed.