purpose : to report a patient with urrets-zavalia (u-z) syndrome after penetrating keratoplasty (pkp) in both eyes case report : a 22-year-old woman with keratoconus associated with a central full thickness scar in both eyes underwent pkp in her right eye that was postoperatively associated with a fixed dilated pupil and severe fibrin reaction, posterior synechiae and mild anterior sub capsular...

We analyzed 18 high-quality waveform doublets with time separations of up to 35 years in the South Sandwich Islands region, for which the seismic signals have traversed the inner core as PKP(DF). The doublets show a consistent temporal change of travel times at up to 58 stations in and near Alaska, and they show a dissimilarity of PKP(DF) coda. Using waveform doublets avoids artifacts of earthq...

purpose: to report the results of photorefractive keratectomy (prk) with mitomycin-c (mmc) to correct myopia and astigmatism in patients who had previously undergone penetrating keratoplasty (pkp). methods: thirty-eight eyes of 32 patients underwent prk with mmc to correct astigmatism and myopia following pkp. result: mean spherical equivalent (se) was -5.2±4.7 d (diopter) and mean astigmatism ...

Over the past decade, Penetrating Keratoplasty (PKP) graft failure has been increasingly managed by Descemet Membrane Endothelial (DMEK). Moreover, Anterior Segment Optical Coherence Tomography (AS-OCT) is becoming as essential modality for perioperative evaluation. Our aim to share important surgical considerations and modifications based on preoperative evaluation using AS-OCT and, consequent...

In this paper, we establish exact solutions for nonlinear evolution equations. The homogeneous balance method is used to construct exact travelling wave solutions of the CalogeroDegasperis (CD) and Potential Kadomstev-Petviashvili (PKP) equations, in which the homogeneous balance method is applied to solve the Riccati equation and the reduced nonlinear ordinary differential equation. Many new f...

PURPOSE To report changing trends in indications and techniques of corneal transplantation in Iran. METHODS We reviewed eye bank records of 47,129 patients who had undergone corneal transplantation between 2006 and 2013 at different eye centers throughout Iran. RESULTS The most common indication for corneal transplantation was keratoconus (KCN, n = 21,350 eyes, 45.3%), followed by bullous k...

To investigate the clinical and microbiological profiles from microbial keratitis following penetrating keratoplasty (PKP) in a tertiary referral center in Taiwan, the medical records of 648 consecutive patients (648 eyes) undergoing PKP between January 2003 and December 2007 were retrospectively reviewed. Patients who subsequently sustained microbial keratitis were enrolled and analyzed for po...