Comparison of Subjective and Objective Torsion in Normal Patients

Abstract

Purpose: To compare subjective and objective torsion in normal individuals.

Methods: A total of 59 individuals (118 eyes) were recruited from one ophthalmology institute in New South Wales, Australia. Objective torsion was measured with optical coherence tomography (OCT) (Heidelberg Engineering) and subjective torsion measurements were obtained with the Torsionometer (INNOVA).

Results: Kendall's tau correlation coefficient when comparing the Torsionometer to combined left and right OCT measurements was 0.115 (95% CI: -0.085 to 0.322), inferring a weak correlation. Similarly, when the Torsionometer readings were compared with the OCT measurements of each eye separately, the results demonstrated a weak correlation.

Conclusions: To the authors' knowledge, this is the first study comparing subjective and objective torsion in normal individuals. The results demonstrate that subjective and objective torsion in normal individuals should be considered as separate entities and the terms should not be used interchangeably. [J Pediatr Ophthalmol Strabismus. 2021;58(2):112-117.].