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Borish Vectographic Nearpoint Card II contour and random dot stereoacuity in children
1Ohio State University College of Optometry, Columbus, Ohio 43210, USA.
Purpose:
To determine the completion rate and normative values for the Borish Vectographic Nearpoint Card II (Stereo Optical Co, Inc, Chicago, III) contour and random dot stereoacuity tests in children.
Methods:
Children had to pass a modified clinical screening technique to be included in the study to eliminate vision problems that could potentially affect stereoacuity. One hundred forty-six children in second through fourth grade (mean age: 8.27 years) from a middle class, suburban, primarily white, elementary school near Columbus, Ohio participated in this investigation. Random dot and contour stereoacuity were measured using the Borish Vectographic Nearpoint Card II.
Results:
All of the children were able to identify which circle had disparity on the 1280 seconds of arc contour stereoacuity target, but six children were unable to perceive the "E" on the 1280 seconds of arc random dot target. The median stereoacuity was 80 seconds of arc on both the contour and random dot stereotests in this population.
Conclusion:
A high completion rate was found on both the contour and random dot stereoacuity tests. Median stereoacuities were higher on the Borish Vectographic Nearpoint Card II in this population than those previously reported with the Randot contour stereoacuity test and Randot Preschool random dot stereoacuity test in children.