Repeatability of Scheimpflug based corneal tomography parameters in advanced keratoconus with thin corneas.

ABSTRACT:

Objective

To determine the repeatability limits of corneal tomography parameters in patients with advanced and moderately thin keratoconic corneas to assist in planning thickness-based procedural interventions.

Methods

Prospective, single-centre, repeatability study. Three tomography scans using the Pentacam AXL were obtained from patients with keratoconus with thinnest corneal thickness (TCT) ≦400 µm (sub-400 group) and compared to those with TCT = 450-500 µm (450-plus group). Eyes with previous crosslinking, intraocular surgery, or acute corneal hydrops were excluded. Eyes were age and gender-matched. The within-subject standard deviations for flat keratometry (K1), steep keratometry (K2), maximal keratometry (K_max), astigmatism and TCT were used to calculate re

SUBMITTER: Wadhwa H 

PROVIDER: S-EPMC10630456 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature