To compare the efficacy of epithelium-off corneal collagen crosslinking (CXL) with transepithelial CXL in patients progressive keratoconus a follow-up 3 years, taking into account patients’ age and location ectasia. In this prospective study participated 64 eyes were included long-term study, which 31 treated by 33 CXL. All 36 months evaluated for visual variables (corrected distance acuity (CD...

AIMS To examine histopathological and immunohistochemical changes in lenticules and host of corneal buttons from patients who previously underwent epikeratoplasty for keratoconus. METHODS 12 penetrating keratoplasty specimens from patients with keratoconus who had previously undergone epikeratoplasty, eight keratoconus, and seven normal corneas were examined. Immunostaining for Sp1, alpha1-pr...

PURPOSE To characterize corneal structural changes in keratoconus using a new morphogeometric approach and to evaluate its potential diagnostic ability. METHODS Comparative study including 464 eyes of 464 patients (age, 16 and 72 years) divided into two groups: control group (143 healthy eyes) and keratoconus group (321 keratoconus eyes). Topographic information (Sirius, CSO, Italy) was proce...

WHY EARLY DIAGNOSIS? In corneal refractive surgery, early diagnosis of keratoconus (subclinical asymptomatic keratoconus) is of great importance in patients seeking surgery because it can prevent progression of the pathology after surgery and make it symptomatic (corneal ectasia), thus creating the need for diagnostic tests that provide high sensitivity (ability to detect the disease in affecte...

K eratoconus early detection (screening) and diagnosis requires an in-deep corneal analysis with different techniques; slip lamp assessment, corneal topography and corneal tomography are the most commonly accepted to detect clinical signs and assess anterior and posterior corneal surface and global corneal pachymetry. However, keratoconus early detection and definitive diagnosis are two differe...

PURPOSE To report the recurrence of keratoconus 49 months after deep anterior lamellar keratoplasty (DALK). CASE REPORT A 21-year-old man with history of bilateral keratoconus who had undergone DALK in his right eye, presented with gradual visual loss 49 months after corneal transplantation. Slit lamp biomicroscopy revealed graft ectasia together with Vogt's striae in the posterior stroma and...

PURPOSE To validate the estimation of corneal aberrations from videokeratography against a laser ray tracing technique that measured total eye aberrations, in eyes without keratoconus (ie, cornea-dominated wave aberrations). METHODS We measured total and corneal wave aberrations of three eyes diagnosed with keratoconus by slit-lamp microscopy and corneal topography: two eyes from one patient ...

.................................. We present a case of a sixty years old Asian male who presented to us with gradual decrease in vision of both eyes. Slit lamp examination revealed paracentral thinning with a dome-shaped excavation in the posterior corneal surface in each eye. Other than the early lens changes, rest of the ocular examination was normal. A diagnosis of bilateral Posterior Kerat...

AIM To compare the anterior and posterior corneal parameters before and after collagen cross-linking therapy for keratoconus. METHODS Collagen cross-linking was performed in 31 eyes of 31 keratoconus patients (mean age 30.6±8.9y). Prior to treatment and an average 7mo after therapy, Scheimpflug analysis was performed using Pentacam HR. In addition to corneal thickness assessments, corneal rad...

OBJECTIVE: It was aimed to evaluate the changes observed in anterior segment parameters patients with keratoconus using Pentacam device according severity of disease and compare determined results those obtained from healthy individuals.MATERIAL AND METHODS: The data by for 104 eyes 52 120 60 individuals were retrospectively evaluated. Demographic features patients, corneal curvature posterior ...