Fig 1.
Participants received a text message and were instructed to read it. Reading distance and character size were obtained.
Fig 2.
Scatterplot depicting values of reading distance (A) and accommodative demand (B) for non-presbyopes and presbyopes.
Asterisks depicts average values while different colors represent different ages (*** = p < 0.001).
Fig 3.
Correlations between reading distances obtained using tape measure and the use of a dedicated smartphone application.
Fig 4.
Scatterplot depicting values of character size (A) and angular size (B) for non-presbyopes and presbyopes.
Asterisks depicts average values while different colors represent different ages (*** = p < 0.001).