Importance We define a Reading Accessibility Index for evaluating reading in individuals
with normal and low vision. Objective To compare the Reading Accessibility Index with data
from the Impact of Cataracts on Mobility (ICOM) study. Design, Setting, and Participants This
investigation was a secondary data analysis from the ICOM study performed between July 1,
2014, and September 20, 2015, at 12 eye clinics in Alabama from October 1, 1994, through
March 31, 1996. Participants were 321 adults with cataract (n= 92), pseudophakia (n= 131) …

Purpose: We define a new measure of reading accessibility, primarily intended for
evaluating low-vision reading. We illustrate this measure with data from the Impact of
Cataracts on Mobility (ICOM) study (Owsley et al, JAMA, 2002). Methods: The reading
accessibility index (AI) is defined as a subject's average reading speed in words/min on the
MNREAD acuity chart over the print size range from 0.4 to 1.3 logMAR corresponding to
physical x-heights of 1.46 to 11.8 mm, normalized by the average value for a group of 78 …