PURPOSE To analyze the factors related to changes in astigmatism before and after suture removal in patients who underwent penetrating keratoplasty (PK). METHODS The study group consisted of 171 consecutive PKs in 171 patients. Keratometric astigmatism was measured before and after suture removal in all patients. The vectorial difference for each eye was calculated between the examination bef...

PURPOSE To evaluate the effect of non-keratometric ocular astigmatisms on visual and refractive outcomes after photorefractive keratectomy (PRK) for correction of myopic astigmatisms. METHODS Seventy one eyes of 36 subjects were enrolled in this study. Patients underwent PRK for treatment of myopia. Subjects were evaluated for refractive error, keratometry, and visual acuity before and six mo...

We report a second clinico-pathologic report of recurrent keratoconus in a 43-year-old white female with bilateral penetrating keratoplasties for keratoconus. She was found to have a recurrence of this condition in the right eye as manifested by increasing myopic oblique astigmatism, subepithelial and anterior stromal scarring and corneal thinning, 22 years following the initial grafting proced...

This article aims to provide some personal surgical tips increase the success rate of deep anterior lamellar keratoplasty (DALK), a very advantageous yet complex procedure for treating keratoconus. The most troublesome step is obtaining successful pneumatic dissection stromal tissue, allowing exposure cleavage plane. following may aid trainee surgeon in mastering this step, among others: perfor...

PURPOSE To report the outcomes of a simple and effective office-based procedure for the correction of astigmatism after deep anterior lamellar keratoplasty (DALK). METHODS This study enrolled 24 consecutive keratoconic eyes that developed an intolerable amount of graft astigmatism after DALK. The location and extension of steep semi-meridians were determined using corneal topography. Office-b...

purpose: to assess the efficacy and safety of laser in situ keratomileusis (lasik) for correction of residual myopia and astigmatism after penetrating keratoplasty (pk). methods: in this prospective interventional case series, lasik was performed on 14 eyes of 13 patients unable to wear glasses or contact lenses after pk. the interval between lasik and pk was at least one year. all patients had...

purpose: to evaluate the outcomes of keratorefractive surgery for correction of postkeratoplasty astigmatism in keratoconus. methods: in this retrospective study, surgical records of 45 eyes of 45 patients that underwent relaxing incisions with or without compressive sutures were evaluated. the minimum interval between complete suture removal and operation was 1 month. location and extent of in...

Aim: Keratoconus is the most common indication for corneal transplantation with high success rate and low number of complications. The aim of this study was to investigate the level and speed of visual recovery after penetrating keratoplasty (PK) for keratoconus patients in first year after transplantation. Patients and methods: This prospective study includes 38 keratoconus patients which unde...