PURPOSE The purpose of this study was to evaluate the ability of second-harmonic imaging to identify differences in corneal stromal collagen organization between normal human and keratoconus corneas. METHODS Six normal corneas from eye bank donors and 13 corneas of patients with keratoconus, obtained after penetrating keratoplasty were examined. A femtosecond titanium-sapphire laser with 800-...

OBJECTIVE To present success of Toris-K contact lenses in keratoconus and traumatic keratopathy with irregular corneal surface. METHODS Toris-K contact lenses were used to treat 7 eyes of 4 patients with traumatic keratopathy (Case 1) or keratoconus (Case 2, Case 3, and Case 4). All cases had a complete eye examination before the contact lens application. The case with traumatic keratopathy w...

PURPOSE To evaluate and compare corneal hysteresis (CH) and corneal resistance factor (CRF) in healthy eyes with a central corneal thickness (CCT) < 505 µm with CH and CRF in gender-, age-, and CCT-matched keratoconus cases, and to estimate the sensitivity and specificity of these parameters for discriminating between the two groups. METHODS Prospective, comparative case series. In total 46 e...

Purpose. To assess and compare the anterior and posterior corneal surface parameters, keratoconus indices, thickness profile data, and data from enhanced elevation maps of keratoconic and normal corneas with the Pentacam Scheimpflug corneal tomography and to determine the sensitivity and specificity of these parameters in discriminating keratoconus from normal eyes. Methods. The study included ...

Keratoconus is a progressive, non-inflammatory corneal ectasia characterized by thinning and weakening of the corneal stroma which results in its' protrusion. The onset is during puberty and progresses until the fourth decade of life. In earlier stages, good visual acuity can be provided with spectacles. With progression, contact lenses are considered to be a better therapy. Aim of this study w...

Considerable achievements having been recently made in modern diagnostics and treatment of keratoconus have not diminished the urgency of the given problem as the traditional views of the pathogenesis of keratoconus do not always allow to struggle effectively with this difficult and continuously progressing disease. The objective of the research was to study the peculiarities of biomechanical p...

Keratoconus is an ectatic disease in which the cornea develops a conical shape due to thinning of the collagenous corneal stroma. Characteristic morphological features seen on slit lamp examination are well described. This overview describes the recent advances in our understanding of keratoconic pathology, focussing particularly on the matrix metalloproteinase hypothesis of keratoconus disease...

ABSTRACT We report a case of two twins for whom advanced keratoconus is present in one the siblings and no clear sign disease could be found other.

Purpose: Keratoconus results in image quality loss one or both eyes due to increased corneal distortion. This study quantified the depth of monocular suppression keratoconus this using a binocular contrast rivalry paradigm. Methods: Contrast was induced 50 keratoconic cases (11–31 years) and 12 age-matched controls by dichoptically viewing orthogonal Gabor patches 5 cycles per degree (cpd) 1...

PURPOSE To report a young child with bilateral keratoconus in the context of vernal keratoconjunctivitis (VKC) who developed bilateral corneal hydrops associated with eye rubbing, and to discuss the pathogenesis and review the pertinent literature. CASE REPORT A seven-year-old girl with VKC and asymmetric keratoconus developed corneal hydrops due to habitual eye rubbing. Corneal edema subside...