A Correlation between Measurements Obtained with the LEA Symbols Visual Acuity Chart and the Gold Standard ETDRS VA Chart for 3 to 7 Years Old Normal Children

Defining real change in measures of stereoacuity. Wendy E. Adams, David A. Leske, Sarah R. Hatt, Jonathan M. Holmes Purpose: To establish the thresholds for real change in each of four measures of stereoacuity by determining the 95% limits of agreement for test-retest differences. Methods: Sixty-nine patients (age range, 5 to 76 years; median, 37 years), with any type of strabismus and measures of stereoacuity on two consecutive visits, were identified using the following criteria: stable angle of deviation (alternating prism cover test within 5Δ) and stable visual acuity between visits (