Titmus stereoacuity norms in Saudi primary school children

ABSTRACT

Purpose This paper presents the result of Titmus stereoacuity tests conducted on Saudi male primary school children. The objective was to establish the Titmus stereoacuity norms in Saudi primary school children. Methods Visual acuity [VA] was measured at 40 cm in all the children attending two primary schools in Riyadh. The total number of subjects examined was 719 and were between the ages of 6 and 13 years. Six hundred and twenty-eight [87.3%] of the subjects had a VA of 6/9 or better monocularly and binocularly [unaided or with current glasses]. Titmus stereoacuity tests were subsequently measured in the latter group. four hundred and sixty-eight [74.5%] of the subjects had 40 arc seconds of stereoacuity. 82[13%] had 50 seconds, 38 [6%] had 60 seconds, 30 [4.8%] had 80 seconds and 10 [1.6%] had 100 seconds. The range of stereoacuity values,for the various age groups are presented. This data established that between the age of 6 to 9 years, the Titmus stereoacuity norm should be 40 to 100 arc seconds, and between the age of 10 to 13 years, the stereoacuity should be 40 to 80 arc seconds, when a child has VA of 6/9 or better