Correlative factors’ analysis of postural-related ocular cyclotorsion with image-guided system
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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.
A cross-sectional study conducted in 73 inpatients (85 eyes) who received intraocular operations in China Medical University.
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.
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 < 0.05). The effect of eye axial length, BCVA, astigmatism degree, astigmatism axis, anesthesia method, age and gender on cyclotorsion orientation was not statistically significant, neither did these factors show any significant differences in the ocular cyclotorsion degree (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).
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.
KeywordsOcular cyclotorsion Image guided system Anesthesia Astigmatism
The research was supported by “Clinical Competency Construction Project of Hospital Reform in Liaoning Province” (LNCCC-D15-2015); Natural Science Foundation of Liaoning Province (2015020474).
Conflicts of interest
F. Zhao, None; L. Li, None; W. Zhou, None; D. Shi, None; Y. Fan, None; L. Ma, None.
- 13.Park SH, Kim M, Joo CK. Measurement of pupil centroid shift and cyclotorsional displacement using iris registration. Int J Ophthalmol. 2009;223:166–71.Google Scholar
- 18.Demer JL, Miller JM, Poukens V, Vinters HV, Glasgow BJ. Evidence for fibromuscular pulleys of the recti extraocular muscles. Investig Ophthalmol Vis Sci. 1995;36:1125–36.Google Scholar