[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100572880":3},{"organization":4,"armGroups":7,"interventions":18,"overallOfficials":23,"centralContacts":27,"locations":37,"responsibleParty":56,"collaborators":10,"id":60,"slug":61,"hasResults":62,"nctId":63,"briefTitle":64,"officialTitle":65,"acronym":10,"eligibilityCriteria":66,"healthyVolunteers":62,"sex":67,"minAge":68,"maxAge":69,"enrollmentInfo":70,"targetDuration":10,"studyType":73,"phases":10,"briefSummary":74,"conditions":75,"keywords":10,"overallStatus":78,"whyStopped":10,"lastUpdateSubmitDate":79,"lastUpdatePostDateStruct":80,"startDateStruct":83,"completionDateStruct":85,"leadSponsor":87,"locationsCount":88},{"fullName":5,"class":6},"Assiut University","OTHER",[8,14],{"label":9,"type":10,"description":11,"interventionNames":12},"keratoconic group",null,"patients with keratoconus",[13],"Other: pentacam scheimpflug tomography",{"label":15,"type":10,"description":16,"interventionNames":17},"high myopic astigmatim group","patients with high myopic astigmatism",[13],[19],{"type":6,"name":20,"description":21,"armGroupLabels":22,"otherNames":10},"pentacam scheimpflug tomography","Pentacam tomography is not radiation-based. It uses Scheimpflug imaging, which involves a rotating camera that captures multiple images of the anterior segment of the eye. The system employs light-based technology to measure the front and back surfaces of the cornea, along with the anterior chamber and lens, creating a 3D model of the anterior eye structures.\n\nit uses light instead of ionizing radiation (like X-rays), it is considered safe and non-invasive for routine use in ophthalmology.\n\n* It was used to assess 23 parameters from topographic maps and 15 parameters from Belin-Ambrosio enhanced ectasia (BAD) display maps.\n* Parameters included keratometry readings, anterior and posterior sagittal curvature, corneal thickness, anterior chamber volume, and several indices from the BAD display map.\n* These parameters were analyzed to discriminate between keratoconus and high myopic astigmatism using Receiver Operating Characteristic (ROC) curves for diagnostic accuracy.",[15,9],[24],{"name":25,"affiliation":5,"role":26},"Momen Aly, lecturer","STUDY_DIRECTOR",[28,33],{"name":29,"role":30,"phone":31,"phoneExt":10,"email":32},"youstena w saied, resident","CONTACT","02+01229887036","youstenasaied@gmail.com",{"name":34,"role":30,"phone":35,"phoneExt":10,"email":36},"Mohamed s abdalrahman, professor","+201222414233","mohamed66saad@gmail.com",[38,51],{"facility":39,"status":10,"city":40,"state":41,"zip":42,"country":43,"countryCode":44,"cosmosGeoPoint":45,"geoPoint":50,"contacts":10},"Assiut university","Asyut","Asyut Governorate","71526","Egypt","EG",{"type":46,"coordinates":47},"Point",[48,49],31.18368,27.18096,{"lat":49,"lon":48},{"facility":39,"status":10,"city":40,"state":10,"zip":52,"country":43,"countryCode":44,"cosmosGeoPoint":53,"geoPoint":55,"contacts":10},"71515",{"type":46,"coordinates":54},[48,49],{"lat":49,"lon":48},{"type":57,"investigatorFullName":58,"investigatorTitle":59,"investigatorAffiliation":5,"oldNameTitle":10,"oldOrganization":10},"PRINCIPAL_INVESTIGATOR","Youstena Saied Waheb","DR","100572880","anterior-segment-and-corneal-parameters-in-keratoconus-and-high-myopic-astigmatism-using-schiempflug-imaging-100572880",false,"NCT06739018","Anterior Segment and Corneal Parameters in Keratoconus and High Myopic Astigmatism Using Schiempflug Imaging","Comparison of Anterior Segment and Corneal Parameters in Keratoconus and High Myopic Astigmatism Using Schiempflug Imaging","Inclusion Criteria:\n\n* keratoconus patient\n* virgin clear cornea with high myopic astigmatism\n* normal cornea with high myopic astigmatism\n\nExclusion Criteria:\n\n* patients had previous ocular surgery\n* ocular diseases rather than keratoconus\n* contact lens wearer\n* corneal opacity and corneal dystrophy","ALL","15 Years","50 Years",{"count":71,"type":72},66,"ESTIMATED","OBSERVATIONAL","The purpose of this study was to compare Scheimpflug corneal tomography findings in keratoconus and high myopic astigmatic eyes, as well as to establish the parameters distinguishing keratoconus from high myopic astigmatism.",[76,77],"Keratoconus","High Myopia","NOT_YET_RECRUITING","2024-12-16",{"date":81,"type":82},"2024-12-18","ACTUAL",{"date":84,"type":72},"2024-12",{"date":86,"type":72},"2025-10",{"name":5,"class":6},2]