Screening For Keratoconus Using Tms Iv Corneal Topography Modelling System

Abstract

Keratoconus (KC) is a non-inflammatory progressive thinning (Ectactic) disorder of the cornea, which leads to progressive, mixed, myopic, and irregular astigmatism.  Several devices are currently available for detecting early keratoconus by measuring anterior corneal topography. These range from simple inexpensive devices, such as handheld keratoscopes (Placido disks), to expensive sophisticated devices, such as computer-assisted video keratoscopes. The diagnosis of early or mild KC can be challenging. In such cases, it may be difficult to distinguish early KC from regular myopic astigmatism. However, recent advances in computerized corneal topography have made it much easier to establish diagnoses in questionable cases.

To detect topographic characteristics of keratoconus quantitatively, the use of multiple parameters, each of which represents distinctive characteristics of the map, is desirable. Keratoconus patterns in video keratoscopy can be characterized by an area of localized, abnormal steepening. Localized steepening is often observed in the inferior quadrant, but sometimes it is seen in the center or superior portion of the cornea. This results in asymmetry and a large refractive power difference across the corneal surface.

 “SCREENING FOR KERATOCONUS USING TMS IV CORNEAL TOPOGRAPHY MODELLING SYSTEM –A prospective descriptive observational study” was conducted in “Sun eye care hospital, Bilimora, Dist: Navsari from June 2021 to December. 2022. 200 patients (100 cases & 100 control) were included in the study & both eyes of each patient were examined. To detect keratoconus as early as possible so that appropriate treatment options for preventing the progression of keratoconus and deterioration of vision, can be recommended timely.