 Good morning everyone. I am Dr. Mithun Mohan KK. I am working as a third year junior resident in the Department of Radio Diagnosis in BDGMC Lathur. I am today presenting my paper on the topic study of role of high frequency ultrasonography in evaluation of ocular lesions. My aims and objectives were to study the role of B-scan ultrasonography in ocular diseases in differentiating intraocular and extroocular diseases and to correlate the final diagnosis with ultrasonography diagnosis. Patients with symptoms related to eye and orbit form an important share of general OPD. Early diagnosis and treatment of these conditions remains a mainstream management. It presents a formidable challenge for both the radiologist and the thermologist owing to the complicated anatomical structure of the orbit and its contents. Ultrasonography provides a detailed cross-section anatomy of the entire globe and an excellent topography visualization compared with the real-time display of the moving organ, which is critical in its ability to localize and characterize the pathology. D-mode real-time ultrasonography is known as ARDIS, a traumatic and invaluable in the evaluation of orbit ocular lesions, especially in the presence of OPAG media, when there is a suspicion of intraocular mass. Vitro-retinal diseases are the most common indications of ultrasonophic imaging of the posterior segment. Although most conditions of the posterior segment can be viewed directly, institutions where the media opacity is there. For example, because of vitreous hemorrhage, ecography allows for evaluation of the vitreous retina and corrode that other ways would be impossible. Using ultrasound, it is possible to identify, evaluate and follow numerous posterior segment conditions. This is the image showing the normal anatomy of the orbit, which includes the bony orbit and the orbital soft tissues. So, sonography anatomy of the orbit is like the eye is the easiest object to visualize within the orbit as its fluid content and superficial position make it ideal for ultrasound examination. Lenses visualized and oval visualized as an oval high reflective structure with intraledicular echoes varying from none to highly reflective depending upon the amount of cataract may be seen. Vitreous is acoustically clear, but can show low reflective echoes in older people. Retina, corrode and sclera are seen as a single high reflective structure. Retina, its anterior surface is clearly identifiable on ultrasound examination, but the posterior surface merges with the corrode. The thickness is about 0.4 mm near the entrance of the optic nerve, but reduces to 0.1 mm at the oral serenity. Corrode is a thin erectile vascular layer and sclera displays a higher reflectivity than the corrode. Optic nerve is seen as hypoechoic band starting at the scleral zone and extending posterior medially. The ocular muscles appear fusive hypoechoic spaces between retrovalvered fat and occasional low amplitude echoes from the orbital bone. Retrovalvered fat is hypoechoic compared to other structures and helps in and well demarcation and lesion within the orbit are well demarcated by this fat. Transverse and longitudinal positions were kept for pro for the better visualization of the glue. The common ocular pathologies include cataract to change the lens, vitreous hemorrhages, retinal breaks and detachment include regmatogenous, traction and combined traction, regmatogenous or excerative and corrode reflux. Other pathologies include astrolysis, endophthalmatis, persistent fetal vasculature. Common ocular tumors include corrodal melanoma, retinoblastoma, tumors of the optic nerve, lacrimulina tumors, and lymphoma. Orbital mass solutions include cavernous hemangioma, mucosil and amersus. Orbital inflammation include myositis, gaseous, and orbital pseudo tumors. These are the images of the patients which came to our department with ocular complaints. First of all, vitreous hemorrhage which shows low level echoes. Then next is the vitreous detachment with well defined picacogenic V shaped retinal folds. Next is retinoblastoma which shows internal vasculature and calcium bokeh within. And next is process of hypoblastic primary vitreous which on Doppler shows signals from the posterior high load artery within. Next is the isosvalby which shows the deformed globe with carbonyl calcification and cataract to changes are seen in the next picture. Next is endophthalmatis with irregular ocular outline. And next picture is that of optic nerve head drusil which shows calcium bokeh at the optic nerve head. Next is dermoseus which shows well defined gesticulation showing multiple lower level internal echoes. And next is ethmoidine mucosil which shows well demarcated gesticulation causing expansion and thinning of the ethmoidine sense. Next is lead diapsis. And next is optic nerve glioma which shows well defined hypercoic qc formation in the intra-conal compartment. The study design was of a prospective cross sectional study and sample size was kept at 50. And the patient with ocular trauma were explored from the study. And the examination was done with closed eyelid after application of coupling gel utilizing contact method. Linear high frequency probe of 7.5 to 12 megahertz of GE, logic, p-ray and ultrasonic system was used for the study. And logitunnel and transverse axis cancels performed. The distinction between ocular and extracellular pathologies was made in 100% of cases. The overall sensitivity, specificity, positive and negative relative values and accuracy of the ultrasonography for the diagnosis of ocular pathologies were 96%, 100%, 100%, 95% and 98% respectively with the p-value of 0.0165. The sensitivity, specificity, positive and negative relative value and accuracy for the extracular pathologies were 95%, 100%, 100%, 96.7% and 98% respectively. These are the tabulated form of extracular pathologies which included about 20% and out of which 19 cases were diagnosed accurately on ultrason. These are the tabulated form of ocular pathologies. There were around 30 patients with ocular pathologies out of which 29 was diagnosed correctly. And these are the extra classification and distribution of extracular monosys. And three cases were acoustically cystic. Seven were acoustically solid. And three were acoustically infiltrative. And none were acoustically angiomatous. And there were a total of 30 cases in the ocular phase with 4 in 90-year segment, 26 in process segment of the globe. Of the six vitreous hemorrhage cases, one was misdue on ultrason and 29 out of 30 cases were correctly diagnosed. 20 cases in extracular phase which 40% were in extraconal, 20% in intraconal, 20% conal and 10% both intran extraconal and 10% presepural compartments. One case of hemogenome was falsely diagnosed as opening of tumor on ultrason. Out of 20 cases, 19 were categorized and diagnosed by ultrason. Ultrason was 100% effective in differentiating ocular and extracular pathologies. The overall sensitivity and specificity are 96.67, 100% 100%, 95% and 98% respectively. In 33 cases, clinical laboratory investigations formed the basis for confirmation of zoonological diagnosis. Surgery followed by histopathological examination formed the gold standard for diagnosis in 14 cases. Orbital pathologies observed in Australia were predominant in the fifth decade with a near uniform general blood collection. Involvement of right eye was seen in 50% of cases with 18% of cases having bilateral involvement. Commonest ocular pathologies was vitreous hemorrhage followed by retinal enhancement. Commonest extracular pathologies was hemogenome followed by gravestasis. These are the study being compared with other studies which were conducted in a national level and at an international level. Coming to conclusion, demode real-time ultrason is known as RDS heteromatic and invaluable in the evaluation of ocular lesions, especially in the presence of OPAC media when there is a suspicion of an endocrine mass. Ultrason is the only practical method of obtaining images of the posterior segment of the eye when light conducting media is OPAC. Ultrason contributes more to tissue diagnosis than to CT or MR as they cannot scan in real-time and are not comparable with ultrason for spatial resolution. Sonological diagnosis correlated very well with the final diagnosis established by higher modalities follow-up and histopathology. I express my sincere gratitude towards all the faculty members of the VDGMC Latur, to Dr. Mahesh Kadam Sir and Dr. Atush Konvarsar. These are the list of publications and books which helped me for conducting the study. With this, I conclude my topic. Thank you.