background: astigmatism is the leading complication in visual recovery after penetrating keratoplasty (pkp) and deep anterior lamellar keratoplasty (dalk); in this study, we evaluated the outcome of femtosecond laser arcuate keratotomy (flak) after dalk and pkp in iranian keratoconic patients. materials and methods: in this prospective interventional case series, refractive and keratometric pre...

PURPOSE To report the indications and techniques of corneal transplantation at a tertiary referral center in Tehran over a 3-year period. METHODS Records of patients who had undergone any kind of corneal transplantation at Labbafinejad Medical Center, Tehran, Iran from March 2004 to March 2007 were reviewed to determine the indications and types of corneal transplantation. RESULTS During th...

Correction of hyperopia (far-sightedness) is accomplished by decreasing the radius of curvature of the cornea. Radio frequency (RF) current at 350 kHz is presently being used to the required correction. The procedure is termed Conductive Keratoplasty and temperature increases induced by the RF current shrink corneal collagen. Finite difference method (FDM) numerical models of the electric and c...

PURPOSE Penetrating keratoplasty and epikeratoplasty have been utilized in the surgical treatment of keratoconus. Comparison of the relative efficacy of each procedure in achieving visual outcomes has not been achieved due to limited numbers of cases and follow-up in previous series. METHODS All patients who underwent either penetrating keratoplasty or epikeratoplasty for keratoconus between ...

BACKGROUND Using a rat penetrating keratoplasty model, this study aims to explore the inhibitory effect of hachimycin on corneal graft rejection, to provide new basis for its clinical application. MATERIALS AND METHODS Female adult Sprague-Dawley (SD) rats weighing between 220-250 g were used as acceptors and male or female Wistar rats weighing between 220-250 g were used as donors. The rats ...

Over the last decade there has been a paradigm shift from penetrating keratoplasty (PKP) to lamellar keratoplasty for the management of primary as well as acquired corneal ectasia. Several treatment modalities have emerged including collagen cross-linking, intrastromal implants, laser vision correction, and recent techniques in central and peripheral lamellar keratoplasty. This article reviews ...

BACKGROUND The purpose of this study was to compare endothelial cell counts after Descemet's stripping automated endothelial keratoplasty (DSAEK) and penetrating keratoplasty in Asian eyes. METHODS This was a retrospective study of patients from our prospective Singapore Corneal Transplant Study cohort who received corneal transplantation in 2006-2008. We compared eyes that underwent DSAEK or...

Keratoplasty is the medical term that refers to a cornea transplant. There are some differences between the definitions of keratoplasty, commonly it is mentioned for corneal transplant, Lamellar Keratoplasty, which is a partial thickness corneal grafting and penetrating keratoplasty: is a full-thickness corneal grafting. The indications for keratoplasty include: optical (to improve visual acuit...

OBJECTIVE To report the outcome of mushroom keratoplasty for the treatment of full thickness corneal disease in pediatric patients with healthy endothelium. METHODS A retrospective analysis of pediatric patients who underwent mushroom keratoplasty. The medical records of pediatric patients suffering from full thickness corneal stromal disease with normal endothelium who underwent mushroom ker...

The occurrence of pseudoexfoliation (PSX) following penetrating keratoplasty for keratoconus is reported in three eyes of two patients. The patients' ages at keratoplasty were 37, 40, and 31 years, and PSX was first observed 5, 4, and 6 years following keratoplasty. The donor age was 76, 81, and 81 years. Possible explanations for the occurrence of PSX after keratoplasty include mere coincidenc...