AIM To anatomically locate the points of minimum corneal thickness and central corneal thickness (pupil center) in relation to the corneal apex. METHODS Observational, cross-sectional study, 299 healthy volunteers. Thickness at the corneal apex (AT), minimum corneal thickness (MT) and corneal thickness at the pupil center (PT) were determined using the pentacam. Distances from the corneal ape...

Aim. The aim of this study was to determine the intra- and interobserver variability of two Scheimpflug based camera systems, Pentacam and Sirius. In addition, the comparability of the measurements was tested in healthy subjects, subjects with regular astigmatism, and keratoconus patients. Methods. Intra- and interobserver variability were assessed in 20 healthy corneas. Pachymetry values were ...

PURPOSE To present a case series of patients with subclinical keratoconus with normal topometric (anterior curvature) and tomographic findings in one eye who showed abnormalities detected by Corvis ST (Oculus Optikgeräte GmbH, Wetzlar, Germany) in vivo biomechanical assessment. METHODS All patients had a complete ophthalmic examination, including the Corvis ST biomechanical measurements, opti...

Pentacam (Oculus, Inc., Almanya), RTVue (OptovueInc., Freemont, ABD) ve Spectralis (Heidelberg GmbH, Almanya) cihazları ile saptanan iridokorneal açı (İKA) ölçümlerinin tutarlılık uyumluluğunun değerlendirilmesi amaçlanmıştır. 22 sağlıklı katılımcının gözü retrospektif olarak değerlendirilmiştir. cihazında ölçümler her gözde saat 3 9 kadranlarda (nazal temporal) otomatik alınmış olup, trabeküle...

•Obtaining measurements by the Pentacam HR over time increases variation in measurements. The assessment of interday repeatability is thus importance understanding at which change magnitude a true progression can be suspected.•The Kmax depends on disease and must considered.•The use single, or mean several, when estimating affects common auto-keratometer could helpful assessing more advanced eq...