Ultrasound of the eyeball and orbit

Intraocular white pupil, congenital cataract, retinal detachment, retinoblastoma, exudative retinitis, post-crystal fibrosis, congenital first vitreous persistence, and anterior chamber empyema, vitreous abscess, etc. secondary to systemic infection Inflammation in the sputum. Basic Information Specialist Category: Ophthalmic Examination Category: Ultrasound Applicable gender: whether men and women apply fasting: not fasting Tips: Ultrasound diagnosis provides some information for primary meningioma, but secondary meningioma is difficult to diagnose. Normal value The length of the eye axis (outer diameter) is 23.09 ± 1.06 mm. The anterior chamber depth is 2.37±0.47mm. The lens has a thickness of 4.02 ± 0.44 mm. The vitreous cavity has a shaft diameter of 13.90±0.63 mm. The thickness of the eye wall is 2.90 ± 0.39 mm. Optic nerve transverse diameter The near ball segment is 4.44±0.47mm right and 4.46±0.42mm left. 1cm behind the ball is 4.43±0.57mm right and 4.34±0.47mm left. Clinical significance 1, color Doppler ultrasound and pulse Doppler, especially high-grade color ultrasound diagnostic apparatus can do ocular hemodynamic analysis, can be used to display the maximum blood flow velocity, average blood flow velocity, flow velocity integral, resistance index, pulsation index and so on. 2. Ultrasound has special diagnostic value for retinal detachment and retinoblastoma, and the diagnostic coincidence rate can reach 98%. 3, the advantages of ultrasound diagnosis of foreign bodies are: 1 metal and non-metal can be displayed; 2 can clearly distinguish the location of foreign objects in the eye wall, eyeball or outside the eye; 3 simple, easy, non-invasive; 4 can be used for magnetic experiments , observe the dynamic changes of foreign bodies. 4. It is valuable for the diagnosis and localization of tumors in the orbit and the differential diagnosis of the exophthalmos. Ultrasound can help CT to understand the tumor infiltration of surrounding tissues, such as the relationship between optic nerve and eye muscle, identify intraocular tumor, acute and chronic inflammation (inflammatory pseudotumor), Graves syndrome, vascular malformation, pulsatile intermittent eyeball And identification of cysts, cavernous hemangioma, meningiomas, lacrimal gland tumors, etc., have a certain value. 5, acute suppurative inflammation in the orbit can be diagnosed in the acute phase without ultrasound examination, but after the formation of post-ball abscess in the late stage of inflammation, causing eyeball protrusion, it is necessary to use ultra-examination to confirm the diagnosis to determine the extent of abscess. 6, interventional ultrasound diagnosis and treatment under ultrasound guidance, fine needle aspiration cytology and tissue biopsy of the intraorbital tumor, or puncture aspiration treatment, intraoperative monitoring of the inner wall of the eyeball or foreign body in the eyeball, or to determine the treatment effect 7. Ultrasound measurement of normal eyeballs and ophthalmic living biology (such as axial, corneal and crystal thickness) measurements are important for judging the physiology and pathology of the eye. Scope of application: 1, retinal disease 1 diagnosis of exudative retinitis; degree, nature and cause of retinal detachment; retinoblastoma; identification is primary or secondary; 2 can help determine the presence or absence of tumor, tumor nature, typing and There is no transfer. 2, choroidal disease 1 to determine the presence or absence of choroidal detachment; 2 can identify choroidal tumors, such as choroidal melanoma, choroidal hemangioma, choroidal tuberculoma, choroidal osteoma, iris cysts and so on. 3, lens disease degree of cataract, lens dislocation, lens ectopic site, lens hyperplasia after lens. 4, vitreous disease, glass volume, vitreous, vitreous cyst, vitreous hemorrhage, congenital vitreous persistence. 5, scleral disease check the location of the scleral staphyloma, or the sclera after the trauma. 6, eye trauma such as intraocular metal, non-metallic foreign body, eyeball rupture. 7, the orbital tumor, mucinous cyst, inflammatory abscess, the location of the eye, diagnosis and differential diagnosis. 8. Measure the normal value of the eyeball, the crystal measurement before the intraocular lens replacement, and the biological measurement of the eyeball. High results may be diseases: underarm space infection, supraorbital neuralgia, sputum cellulitis, normal tension glaucoma, pigmented glaucoma, anterior chamber hemorrhage and glaucoma, ptosis, superior oblique muscle tendon sheath syndrome 1. More than 95% of tumors can be qualitatively diagnosed, but ultrasound shows poor bone tissue, so some tumors cannot show their size and whether they invade the bone wall. Therefore, it is necessary to combine other imaging examinations, such as CT and MRI, to make a comprehensive diagnosis. 2, ultrasound diagnosis provides some information for primary meningioma, but secondary meningioma is difficult to diagnose. Inspection process Ultrasound examination, probe frequency 7.0MHz-10MHz-20MHz, depth adjustment 5cm. The patient is supine and the eye is looking ahead: 1 Close the eye through the eyelid scan method, the probe is placed on the center of the eye, the nasal side, the temporal side, for cross-cutting, oblique cutting, longitudinal scanning. The probe is placed in the center of the eyelid and tilted forward and upward for cross-cut scanning. 2 by the water sac inspection method: closed eyes, water sac placed on the eyelids, the probe for cross-cut, oblique cut, slitting scan. 3 Dynamic examination method: When performing the above two examination methods, the patient turns the eyeball up, down, left, and right. 4 low-position method: When the patient sits down, check the relationship between the abnormal echo in the vitreous and the fundus. Not suitable for the crowd Inappropriate people: Generally there are no people who are not suitable. Adverse reactions and risks Generally no adverse reactions.