Case Study

Introduction

Studying any case of KC consists of three steps

Step 1: Analyzing Step

This step consists of

1.Analyzing patient’s data including history, clinical examination, and corneal topography. Analyzing corneal topography consists of studying the following maps: the anterior sagittal and tangential curvature maps, the anterior and posterior elevation maps, and the thickness map.

(i)The anterior sagittal curvature map should be displayed with the distribution of the steep and flat segments on. Studying the anterior sagittal curvature map is essential to determine the topographical pattern. Modification of the color scale may be needed in order to clarify the pattern of the cone.

(ii)The anterior tangential map and the elevation maps in the BFS mode are essential to determine the shape and the location of the cone.

(iii)The thickness map is essential for differentiating between PMD and PLK.

2.Krumeich classification is applied to grade the case.

Step 2: Management Suggestion Step

This step consists of

1.Filling the suggested table with patient’s data.

2.Filling suggestion(s) for management(s) according to each category alone.

3.Summarizing the most appropriate management(s) at the bottom of the table.

Step 3: Discussion Step

All possibilities of suggested managements will be discussed bearing in mind that the least managements and the least combination between managements should be done.

N.P: Only positive findings will be mentioned in the history taking of the patient.