Correlative factors’ analysis of postural-related ocular cyclotorsion with image-guided system

摘要

Abstract Purpose To explore the correlation between ocular cyclotorsion induced by sitting and supine positions as well as other selected factors, validated by an image-guided system. Study design A cross-sectional study conducted in 73 inpatients (85 eyes) who received intraocular operations in China Medical University. Methods The ocular cyclotorsion degree was recorded using an image-guided system (Verion Reference Unit, Alcon) by comparing images captured in sitting position, as well as pre- and post-different anesthesia methods in the supine position. Possible correlative factors including age, gender, eye axial length, best corrected visual acuity (BCVA), astigmatism degree, astigmatism axis, anesthesia, and comparison in laterality of eyes on ocular cyclotorsion were analyzed. Results The total cyclotorsion rate was 88.24% and the cyclotorsion degree ranged from ? ?14.0° to +?12.0° with an average of 4.6°?±?3.4°. Excyclotorsion was predominant OD whereas incyclotorsion was predominant OS ( p ? p ?>?0.05). Pre- and post-anesthesia, and different anesthetic methods, did not show any significant influence on the ocular cyclotorsion degree ( p ?>?0.05). Conclusions Cyclotorsion orientation seems to be correlated only with eye laterality. None of the other investigated factors, including age, gender, eye axial length, BCVA, astigmatism degree, astigmatism axis and anesthesia seems to affect cyclotorsion orientation or degree.