[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-seo-263112-105":3,"detail-sidebar-cat-1-en-105":72,"doc-detail-263112-en":118},{"code":4,"msg":5,"data":6},0,"ok",{"site_id":7,"language":8,"slug":9,"title":10,"keywords":11,"description":12,"schema_data":13,"social_meta":65,"head_meta":67,"extra_data":69,"updated_unix":71},105,"en","forme-fruste-keratoconus-diagnostics-and-early-screening","Forme fruste keratoconus - diagnostics and early screening","","Forme fruste keratoconus focuses on diagnosing subclinical keratoconus at the earliest stages when patients show vague visual symptoms or rapid myopic astigmatism evolution, often during refractive surgery candidate risk assessment. Early detection combines corneal spectral topography, tomography (thickness mapping), and corneal biomechanics assessment, while current approaches may integrate tomography parameters with wave aberration and biomechanics. The document explains how LASIK and SMILE can further compromise corneal biomechanics, and outlines automated screening concepts, index-based thresholds, and the classification of true keratoconus versus normal or subclinical forms.",{"@graph":14,"@context":64},[15,34,55],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/template/","Template",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/template/general/","General",3,{"item":32,"name":10,"@type":21,"position":33},"https://docshare.wps.com/template/forme-fruste-keratoconus-diagnostics-and-early-screening/263112/",4,{"url":32,"name":10,"@type":35,"image":36,"author":41,"headline":10,"publisher":44,"fileFormat":47,"inLanguage":8,"description":12,"dateModified":48,"datePublished":49,"encodingFormat":47,"isAccessibleForFree":50,"interactionStatistic":51},"DigitalDocument",{"url":37,"@type":38,"width":39,"height":40},"https://docshare.wps.com/thumbnails/forme-fruste-keratoconus-diagnostics-and-early-screening/263112.png","ImageObject",442,249,{"name":42,"@type":43},"Angel","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-09-20","2026-09-14",true,{"@type":52,"interactionType":53,"userInteractionCount":22},"InteractionCounter",{"@type":54},"ViewAction",{"@type":56,"mainEntity":57},"FAQPage",[58],{"name":59,"@type":60,"acceptedAnswer":61},"How does the document describe classification and screening at detection limits?","Question",{"text":62,"@type":63},"The document discusses automated screening based on index values and decision thresholds, where cases may be classified as normal (false), true subclinical keratoconus, or true keratoconus positives. It highlights that outcomes depend on arbitrary thresholds and tool-specific analysis choices.","Answer","https://schema.org",{"og:url":32,"og:type":66,"og:title":10,"og:site_name":45,"og:description":12},"article",{"robots":68,"canonical":32},"index,follow",{"doc_id":70,"site_id":7},263112,1789366920,{"code":4,"msg":73,"data":74},"success",[75,80,85,90,95,100,105,110,115],{"id":76,"doc_module":22,"doc_module_name":25,"category_name":77,"show_sort_weight":78,"slug":79},11,"Presentations",90,"presentations",{"id":81,"doc_module":22,"doc_module_name":25,"category_name":82,"show_sort_weight":83,"slug":84},12,"Resumes",80,"resumes",{"id":86,"doc_module":22,"doc_module_name":25,"category_name":87,"show_sort_weight":88,"slug":89},14,"Invoices",70,"invoices",{"id":91,"doc_module":22,"doc_module_name":25,"category_name":92,"show_sort_weight":93,"slug":94},15,"Posters",60,"posters",{"id":96,"doc_module":22,"doc_module_name":25,"category_name":97,"show_sort_weight":98,"slug":99},16,"Social Media",50,"social-media",{"id":101,"doc_module":22,"doc_module_name":25,"category_name":102,"show_sort_weight":103,"slug":104},17,"Forms",40,"forms",{"id":106,"doc_module":22,"doc_module_name":25,"category_name":107,"show_sort_weight":108,"slug":109},18,"Letters",30,"letters",{"id":111,"doc_module":22,"doc_module_name":25,"category_name":112,"show_sort_weight":113,"slug":114},21,"Paper Templates",5,"papers-templates",{"id":116,"doc_module":22,"doc_module_name":25,"category_name":29,"show_sort_weight":4,"slug":117},158,"general-158",{"code":4,"msg":73,"data":119},{"doc_id":70,"user_id":120,"nickname":42,"user_avatar":121,"doc_module":22,"category_id":116,"category_name":29,"doc_title":10,"doc_description":12,"doc_content":122,"file_id":123,"file_url":124,"file_type":125,"file_size":126,"view_count":22,"is_deleted":4,"is_public":22,"is_downloadable":22,"audit_status":22,"page_count":26,"language":127,"language_code":8,"site_id":7,"html_lang":8,"table_of_contents":128,"faqs":129,"seo_title":130,"seo_description":12,"update_tm":71,"read_time":22},687207412472,"https://ap-avatar.wpscdn.com/davatar_155a257f0dc6eb9ab79c44ca47cae57d","Continue  \nForme fruste keratoconus ppt  \nEverything you need to know about Forme fruste keratoconus. To diagnose keratoconus at the earliest stages , efforts were made using available technologies such as corneal spectral topography , tomography (corneal thickness mapping) , or corneal biomechanics assessment tools , in patients with vague visual symptoms , rapid evolution of myopic astigmatism or regularly during risk assessment of candidates for refractive surgery. Currently , a combination of parameters from corneal tomography , wave aberration and biomechanics may be useful for improving the diagnostic abilities of the subclinical keratoconus. This is especially important in assessing the refractive suitability of surgery , because procedures such as LASI K or SMILE can further compromise the biomechanics of the cornea and accentuate the deformity of the cornea. Schematic representation of interest groups , distribution of index values and verdict based on the index value of the cutout in the context of automated screening ofkeratoconus based on corneal topographical indices. Forme fruste keratoconus is not detected , at this detection limit , verified by a test recognized by the ophthalmological community. The corneas , with a value beyond the incision , can correspond to a true keratocon , a normal cornea (false) or a true subclinical keratocon (true positives) . The following table summarizes the main features of this classification : The term forme fruste often denotes topographical forms , which cause little or no suspicion , but which are known to be a minor form of the disease , either because of Placido's minimal topographical anomalies , i.e. below the accepted detection limit for keratoconussuspect , but there are other suggestive tomographic , topographical or pachymetric anomalies , or because of suggestive clinical context. For example , it has been suggested that in a patient posing with keratoconus in one eye when a companion's cornea presents a negative test based on Placido's topography data , this cornea may be considered forme fruste keratoconus , even if the phenotypic expression of keratoconus in this eye is below the detection limit according to the same criteria. Similarly , the progression of the cornea was initially considered normal ( Placido topography is negative for keratoconus) to the clinical form of keratoconus can lead to a retrospective interpretation of the initial examination as forme fruste keratoconus. Detailed topographical documentation of these clinical situations is important because it allows the identification of new abbreviations or new criteria (indices) . It is also important to understand the cause of any subtle deformation of the cornea. The deformation of the keratoconus is initiated by vigorous and repeated Eye. Before reaching advanced and detectable changes , the cornea undergoes a progressive permanent change of shape. Form. keratoconus forme fruste chase corresponds to the detection of the earliest changes of form. However , these diagnostic subtleties always depend to a large extent on arbitrary thresholds and definitions. It is quite difficult to draw a line between what is normal and what is abnormal in the topography of corneal cards. Some practicing or automated diagnostic algorithms limit their interpretation of the anterior surface of the cornea , while others consider the back surface and variations in the thickness of the cornea in their analysis. Algorithms and thresholds can vary depending on the topographical tools of different manufacturers. (more on keratoconus detection indices) . Consequently , there may be discrepancies in the subjective and objective analysis of the same cornea when analyzed by different tools and/or interpretation by automated diagnostic algorithms or physicians. There is a continuous range of topographical features from the cornea judged very normal to the cornea , which obviously show topographical abnormalities. While this variab","cbCaid58ABGnIMeL","https://ap.wps.com/l/cbCaid58ABGnIMeL","pdf",44026,"English","# Forme fruste keratoconus overview\n## Early diagnostic methods\n## Screening thresholds and classification\n## Implications for refractive surgery\n## Causes of subtle corneal deformation","[{\"question\":\"How does the document describe classification and screening at detection limits?\",\"answer\":\"The document discusses automated screening based on index values and decision thresholds, where cases may be classified as normal (false), true subclinical keratoconus, or true keratoconus positives. It highlights that outcomes depend on arbitrary thresholds and tool-specific analysis choices.\"}]","Forme fruste keratoconus - diagnostics and early screening | PDF"]