Twenty-four subjects were examined by two examiners using a diamond card, a vertical/horizontal row of 20/20 letters, and a reduced Snellen Chart for nearpoint tests. The tests included the #138, modified #16A & B, modified #17 A & B, #18, #20, #20 phoria, #21, and #21 phoria from the Optometric Extension Program 21-point exam. The data was analyzed using a two- factor analysis of variance. The authors have shown that the results of nearpoint tests are dependent on the nearpoint card used.
Files are restricted to Pacific University. Sign in to view.