To the Editor: Bak-Nielsen et al. recently reported on the dynamic assessment of keratoconus and the effects of corneal cross-linking (CXL).1 The authors described the corneal deformation during rapidly applied force via an air jet using ultra high-speed Scheimpflug technology (Corvis ST; Oculus Optikgeräte GmbH, Wetzlar, Germany).1 Patients with both untreated and CXL-treated keratoconus were ...

Machine learning (ML) algorithms are being integrated into several disciplines. Ophthalmology is one field of health sector that has benefited from the advantages and capacities ML in processing different types data. In a large number studies, detection classification various diseases, such as keratoconus, was carried out by analyzing corneal characteristics, data (images, measurements, etc.), ...

A prospective study of corneal stiffness parameter 174 eyes healthy subjects with different refractions as well 56 keratoconus was carried out. The groups were comparable in age and gender composition. Correlation performed between (Stiffness Parameter (SP-A1), minimum thickness (MCT) biomechanically compensated intraocular pressure (bIOP) determined using Pentacam HR Corvis ST (OCULUS, Germany...

KERATOCONUS: ASYMMETRIC DISEASE Keratoconus is a non-inflammatory corneal ectasia with bilateral involvement in over 90% of patients. However, in a study of 83 patients diagnosed at presentation Burns and coworkers demonstrated there is significant asymmetry of disease both for corneal shape and visual acuity. Quantitative topographical indices reflected changes in corneal power which correlate...

PURPOSE The dynamic contour tonometer is a nonapplanation contact tonometer designed to be largely independent of the structural properties of the cornea. Theoretically, it may measure intraocular pressure most accurately in abnormally thinner corneas. This study compares intraocular pressure measurements by dynamic contour tonometry with Goldman applanation tonometry in eyes with normal cornea...

Introduction. To determine the effect of corneal collagen cross-linking treatment on keratoconus and post-LASIK ectasia particularly after an abbreviated exposure to ultraviolet light exposure. Materials and methods. Fifty-one eyes of 34 patients were treated with epithelium-off UVA-riboflavin corneal collagen cross-linking for either 20 minutes or 30 minutes as part of a US.FDA clinical study....

We aimed to compare the effect of accelerated and conventional corneal collagen cross-linking (CXL) on visual, refractive, and topographic parameters in patients with progressive keratoconus. Between December 2014 and February 2016, at Imam Khomeini Hospital, Ahvaz Jundishapur University of Medical Sciences, Iran, we compared 37 eyes of 21 patients treated by conventional CXL (CCXL; 3 mW/cm2 in...

The association of keratoconus and atopic disease has been reported on several occasions but the only controlled clinical study that has so far been published found no evidence to support this view. Since it is now known that atopy is often associated with changes in various immunoglobulins, particularly IgE, it was considered desirable to determine the immunological profiles of a large series ...

PURPOSE To assess the psychometric properties of the National Eye Institute Refractive Error Quality of Life (NEI-RQL-42) questionnaire in keratoconus and compare these findings to patients with refractive error correction alone. METHODS The Portuguese version of the NEI-RQL-42 Quality of Life questionnaire was completed by 44 patients who had keratoconus before and after implantation of intr...