Graft Central Thickness Measurement by Rotating Scheimpflug Camera and Ultrasound Pachymetry after Penetrating Keratoplasty

Comparison of central corneal thickness measurements in corneal edema using ultrasound pachymetry, Visante anterior-segment optical coherence tomography, Cirrus optical coherence tomography, and Pentacam Scheimpflug camera tomography

“…de Sanctis et al and Kuerten et al reported the CCTs of mildly edematous corneas after surgery. 12 , 13 The current study was conducted in eyes with varying degrees of corneal edema. CCTs >650 μm were considered for the first time in this study, and the results provide information that will benefit patients in clinical practice.…”

“…After keratoplasty in patients with clear corneas, mean CCT measurements using the Pentacam were higher than measurements obtained using ultrasound pachymetry, and they also had higher intraob-server and interobserver variability. 12 One study 13 reported the repeatability and comparability of the CCT measurements among the Pentacam, Heidelberg anterior-segment OCT (Spectralis; Heidelberg Engineering, Heidelberg, Germany), and ultrasound pachymetry in postoperative edematous corneas. However, intraobserver variability remained high.…”

Phacoemulsification and customized toric intraocular lens implantation in eyes with cataract and high astigmatism after penetrating keratoplasty

“…10,11 An accurate preoperative examination of corneal graft endothelium and thickness is mandatory to counsel patients regarding this risk. 12,13 An alternative approach to correct cataract and high astigmatism after PKP is phacoemulsification and implantation of a monofocal IOL, followed by a keratorefractive procedure. However, this sequential approach delays visual recovery and increases costs.…”

Assessment of central corneal thickness in normal, keratoconus, and post-laser in situ keratomileusis eyes using Scheimpflug imaging, spectral domain optical coherence tomography, and ultrasound pachymetry

“…4 Interexaminer reproducibility and intraexaminer repeatability of US pachymetry in keratoconic corneas are lower than in normal corneas, and even lower than in corneal grafts. 8,36 Typically, the thickness values in keratoconic corneas are more irregular and variable than those in normal corneas. Thus, slight, but systematic differences between examiners in centering and aligning the probe may cause wider interexaminer variability than in normal corneas.…”