The application of ultrasonograbhy B-scan in diagnosis of ocular contusion

Objective To investigate the clinical value of B-scan application in diagnosing ocular contusion. Methods Sixty-five eyes of 58 cases of posterior segment ocular contusion were examined with ultrasonography B-scan. Comparision and analysis were done betwen their fundus manifestation and ultrasonic results. Results Fundus aspects were macular edema in 26 eyes(40% ) ,retinal hemorrage and subretinal hemorrage in 17 eyes (26. 2% ), macular pigmentary mottling in 9 eyes ( 13.8% ), vitreous hemorrage in 8 eyes ( 12. 3 ), optic disc edema in 7 eyes ( 10. 8 % ), retinal detachment in 3 eyes ( 4. 6 % ), etc. The positive rate of ultrasonographic results of vitreous hemorrage and retinal detachment were 100% , optic disc edema 85.7%, retinal hemorrage and subretinal 84. 2% , macular edema was 69. 2%. Macular pigmentary mottling couldn' t be diagnosed by B-scan. Conclusion Ultrasongogeatohy B-scan is a safe and effectient diagonostic method of posterior segment ocular cotusion. It is valuable for diagnosing vitreous hemorrhage, retinal detachment, optic disc edema, retinal hemorrhage and macular edema. Key words: ultrasonography B-scan;  ocular contusion;  diagnosis