AIM: To observe the image difference of dimensional CT monocular superior oblique palsy form the patient's eyes.

METHODS: Clinical cross-sectional study included of 30 cases which clinically diagnosed monocular congenital superior oblique palsy for dimensional CT. CT values were measured at the position of coronal oblique maximum cross-sectional area at patient eyes.

RESULTS: Ocular and non-ocular paralysis of superior oblique muscle belly maximum cross-sectional area were 4.52±1.49, 8.80±1.42mm²,respectively. CT values were 11.57±22.88 and 35.13±9.74. Paralysis of eye muscles abdominal oblique maximum cross-sectional area and CT values were significantly less than those of the non-paralyzed eye. The difference had statistical significance.

CONCLUSION: The results of dimensional CT scan shows that the CT value of patients with monocular congenital superior oblique palsy superior oblique eye muscle paralysis abdominal cross-sectional area is significantly higher than that of the non-paralyzed eye on the oblique abdominal muscle cross-sectional area.