As the primary refractive surface of the eye, clarity of the cornea is essential for optimal visual acuity. Many disease processes can irreversibly disrupt corneal clarity requiring corneal transplantation to restore visual function. The most common indication for corneal transplantation is opacification from corneal edema. Corneal edema arises from dysregulation of fluid homeostasis in the cor...

purpose: to evaluate the visual outcomes and complications of deep lamellar endothelial keratoplasty (dlek) for management of corneal endothelial disorders. methods: from 2003 to 2005, nine eyes of nine patients with severe bullous keratopathy due to endothelial dysfunction underwent dlek. uncorrected (ucva) and best-corrected (bcva) visual acuity were evaluated pre- and one week, 1, 3 and 6 mo...

PURPOSE To elucidate factors contributing to corneal complications after vitrectomy in diabetic patients. METHODS The records of a series of 129 diabetic patients (202 eyes) who underwent pars plana vitrectomy performed by a single surgeon between March 1997 and February 1999 were analyzed retrospectively. Logistic regression analysis was performed to determine possible factors contributing t...

OBJECTIVES To describe a microsurgical approach to a selective pedunculated conjunctival flap for the treatment of chronic corneal ulceration with or without corneal perforation, and to present the results of 50 consecutive cases. DESIGN Retrospective, noncomparative case series and case reports. Patients All patients who had microsurgical conjunctival flap procedures for the treatment of chr...

PURPOSE To analize changing trends in indications and surgical techniques of corneal transplantation at an ophthalmological tertiary referral center in Colombia over a 7 year period. METHODS A retrospective analysis was performed of medical records from patients who underwent corneal transplantation surgeries at Fundación Oftalmológica de Santander (FOSCAL) in Bucaramanga, Colombia, between A...

The relationship between corneal edema and hydrogel lens oxygen transmissibility was examined for both daily and extended contact lens wear by measuring the corneal swelling response induced by a variety of contact lenses over a 36-hr wearing period. The relationships derived enable average edema levels that occur with daily and extended wear in a population of normal young adults to be predict...

PURPOSE To test our hypothesis about whether there is water migration in the horizontal corneal plane and investigate its developmental mechanism. METHODS A fluorescein solution was intrastromally injected into normal and edematous corneas of rabbits, and the movement of the fluorescein solution was observed and recorded over time. RESULTS In normal corneas, the water flow was characterized...