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Solange Milazzo, Mounir Benzerroug, Dominique Bremond-Gignac; Predictibility of relaxation test and eye position under general anesthesia in strabismus. Invest. Ophthalmol. Vis. Sci. 2013;54(15):3647.
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The aim of our study is to show whether there is a correlation between eye position observed under double Spielmann translucent screens and observed under general anesthesia.
Our study is a prospective, single-center and include 27 children, all with esotropia. The sex ratio was 17 girls for 10 boys. 26 children were never operated, only a girl was operated for the second time (primitive esotropia ).The average age was 5 years. Oculomotor average deviation measured in the cover test was 16.30 degrees + / -4.25; approximately 32 Δ + / - 8.50. Digital photographs obtained were then processed by the method patented by Pechereau, using the free software GIMP right 2.6.11. The general anesthesia was performed without curare. The photographs of corneal reflex were taken with a digital camera NIKON D90.
Values to cover test: 16.30 degrees + / -4.25 Values of photography: 24.88 degrees + / - 9.80 Deviation obtained under double translucent screens was 19.41 degrees + / - 12.37. The average deviation under general anesthesia was of -2.10 degrees + / - 9.10. Patients were generally divergent under general anesthesia. Clinical deviations spent more willingly divergent under general anesthesia, pointed the importance of innervationnel component for these deviations. If the correlation coefficient is ρ = 0.37, the deviations observed with double translucent screens and general anesthesia are correlated (p <0.01).
In view of the results of our study, it appears that there is a correlation between eye position observed with the double translucent screens and under general anesthesia examination. A decrease of deviation under double translucent screens can expect a passage to divergence under general anesthesia. If double translucent screens do not remove all innervationnel parameters of the deviation, however, they are a good indicator of the predominance of these components.
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