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Evaluation of keratometry with a novel colour LED corneal topographer

The Cassini topographer (i-Optics), which analyses corneal shape based on the reconstruction of specular reflections on 679 coloured LEDs, generates keratometry and is the new machine being compared in this study with other keratometry devices. The prospective comparative study included...

Scheimpflug vs. OCT in measuring corneal thickness

The authors report on the reproducibility and repeatability of corneal thickness measurements using three different Scheimpflug imaging cameras (Pentacam, Sirius and Galilei) and one Fourier-domain optical coherence tomography (OCT) system (RTvue-100). The rationale for this study is that corneal thickness...

Keratoconus cone variants

This retrospective study examined correlation between three keratoconic parameters to further understand anatomy of keratoconic cones. Kmax and pachymetry of the thinnest point were obtained from the Pentacam scans. Decentration was calculated as distance from the corneal vertex to the...

BESTi: a new index to detect subclinical keratoconus

In this multicentre, case-control study, the authors develop a new index, named Boosted Ectasia Susceptibility Tomography Index (BESTi), to detect early cases of keratoconus. This index was derived from multiple logistic regression analysis of 22 variables of tomography scans. The...

Long-term results of cross-linking treatment for keratoconus

The authors report on the long-term outcomes in a prospective case series of patients with keratoconus undergoing corneal collagen cross-linking (CXL) treatment. Thirty-two patients (40 eyes; mean age 22.5+/-5.5 years) with Grade I, II and III progressive keratoconus were recruited...

Portable corneal topography – exploration of a prototype

Ophthalmic imaging devices, such as corneal topographers, are not widespread in the developing world. A small device that connects to a smartphone might be a solution to improve developing nation access to corneal imaging. I recently had the opportunity to...