The LexiaD font was developed for Russian-speaking people with reading disorders (dyslexia) (Alexeeva et al., 2020). LexiaD demonstrated an advantage over other popular fonts for primary school children, but for adolescents, the Arial font was more effective (Alexeeva, Zubov, 2020). In this paper, we tested two possible reasons for the advantages of Arial: its familiarity or its structure. LexiaD was compared to Times New Roman (another familiar font) and Roboto (a font similar to Arial, but less familiar) while reading printed texts. Eye movements were recorded using a mobile tracker (PupilCore). There was no statistically significant difference in reading speed between the fonts. Still, for the Times New Roman font, significantly fewer eye fixations on words were detected than for LexiaD. This pattern shows that the familiar Times New Roman font has some advantages over LexiaD. Thus, it can be assumed that familiar fonts, such as Times New Roman and Arial, are more effective for adolescents than the new LexiaD font. A longitudinal study of LexiaD is required to test its potential advantage when it becomes more familiar to readers.