Corneal epithelial thickness mapping using Fourier-domain optical coherence tomography for detection of form fruste keratoconus.

Purpose: To determine whether optical coherence tomography (OCT) epithelial mapping can improve the detection of form fruste keratoconus.

Setting: French National Eye Hospital, Paris 6 Pierre & Marie Curie University, Paris, France.

Design: Retrospective comparative study.

Fourier-domain optical coherence tomography imaging in keratoconus: a corneal structural classification.

Objective: To study corneal morphologic changes in a large keratoconic population and to establish a structural optical coherence tomography (OCT) classification.

Design: Cross-sectional, observational study.

Participants: A total of 218 keratoconic eyes from 218 patients and 34 eyes from 34 normal subjects.