Impact of Simulated Astigmatism on Visual Acuity, Stereopsis, and Reading in Young Adults.

ABSTRACT: This study investigated the functional visual impact of simulated astigmatic blur using cylindrical powers of 0.50 D, 1.00 D, and 2.00 D, applied in against-the-rule (ATR), with-the-rule (WTR), and oblique (OBL) axes, in adults aged 18 to 35 years with no known ocular disease. Forty-five young adults were randomly divided into three groups (n = 15). Binocular best-corrected visual acuity (distance and near) was recorded in logMAR using the ETDRS acuity chart at 5 m and 40 cm, supported by acuity optotypes displayed in a Bailey-Lovie chart format. Depth-fusion and disparity discrimination were measured using polarized stereopsis thresholds with the Randot^® Stereo Test from Stereo Optical Company, Inc. Reading performance was quantified as a continuous binocular rate metric

SUBMITTER: Shato CWM 

PROVIDER: S-EPMC12737380 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature