[Observation of compensatory head posture in superior oblique muscle paralysis].

PURPOSE

Superior oblique muscle paralysis is the most common disease in clinic. We analysed the cause, machanism and regularity of compensatory head posture in superior oblique muscle paralysis.

METHODS

All of 27 cases with superior oblique muscle paralysis aere examined regularly, and special muscle, binocular single vision function with synoptophore examined. Bielschowsky test was made.

RESULTS

In our cases, the incidence rate of compensatory head posture was 40.7%, which had relations with age when a patient had disease, period and function of binocular single vision.

CONCLUSION

The existance of binocular single vision function is the physiological bases leading to compensatory head posture, and the patients whose ages are older than 3 years and the course is less than 10 years may present the compensatory head posture. So we should pay attention to early diagnosis and training to restore the binocular single vision function.