Normative values for randot stereoacuity in Saudi children

ABSTRACT

The aim of this study was to establish the normative values for Randot stereoacuity in Saudi school children aged between 6 and 12 years and to determine the 95% confidence limits for Randot stereoacuity thresholds in Saudi children population. Nine hundred and sixteen [916] male subjects aged between 6 and 12 years of age participated in this clinical study. Case history, distance and near visual acuity, cover test, and external examination were assessed for each subject. Randot stereoacuily tests were subsequently measured at 40 cm for each subject. Eight hundred and twenty three [90%] of the subjects attained 25 seconds of arc or better. The mean Randot stereoacuity was not significantly different [p > 0.05, Tukey-Kramer Multiple Comparison Test] between the different age groups. The range of stereoacuities achieved by subjects for all age groups was 20 to 100 seconds of arc, except for the 11-year old group in which the range was 20 to 70 seconds of arc. We conclude that most Saudi children attain stereoacuity threshold of 40 seconds of arc or better by the age of 12 years. Approximately 99% of all children up to and above the age of 6 years obtain Randot stereoacuity thresholds of 70 seconds of arc or better. These findings should aid in the evaluation of binocular function in young Saudi children