A binocular balancing technique that allows the examiner to check each eye separately while binocular vision is still at play. It is a necessary test, mainly when subjective refraction has been performed under monocular conditions. The test uses a reversed acuity chart containing letters in two vertical columns and a septum on a mirror in the middle of the chart, allowing each eye to view its target. If all the letters are seen equally by both eyes, then it implies binocular balancing.

Also Known As

  • T.I.B
  • Septum Technique
  • Turville Infinity Binocular Balance