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Astigmatic Vector Analysis of Posterior Cornea - a Comparison Among Healthy, Forme Fruste and Overt Keratoconus Corneas

Keratoconus Clinical Trial

Official title:
Astigmatic Vector Analysis of Posterior Corneal Surface - a Comparison Among Healthy, Forme Fruste and Overt Keratoconus Corneas

Clinical Trial Summary

The main purpose of this study is to determine new diagnostic criteria for an eye disease called keratoconus.

Clinical Trial Description

Eyes of patients who distinctly present signs of keratoconus, for both eyes, at corneal tomography (an exam commonly used in such cases), and those who present such signs in only one eye were compared to eyes of unaffected patients. Several characteristics of anterior and posterior corneal astigmatism (special emphasis was given to the latter) were collectively assessed among all patients by a method referred to as vectorial analysis. Statistical tests were then performed, in an attempt to highlight differences among those three groups of patients and, eventually, define new diagnostic criteria. ;

Study Design

Observational Model: Case Control, Time Perspective: Retrospective

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT02698709
Study type Observational
Source University of Sao Paulo
Contact
Status Completed
Phase N/A
Start date May 2015
Completion date September 2015
View Details
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