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 ...

Background: Intrauterine infections (TORCH) lead to the involvement of various organs of the body of the fetus, including the eye. The aim of this study was to determine the frequency and clinical response of eye lesions to specific drugs, in infants with confirmed TORCH induced ocular lesions. Methods: This historical cohort study from 2011 to 2017, had done in Pediatrics and Ophthalmology De...

PURPOSE To investigate whether it is possible to improve estimation of the binocular visual field (VF) using monocular sensitivities on a linear scale adjusted for ocular dominance. METHODS Monocular and binocular VF measurements were evaluated using the Humphrey Field Analyzer (HFA; 24-2 Swedish Interactive Threshold Algorithm standard program) in 60 eyes of 30 patients with open angle glauc...

PURPOSE To investigate the test-retest variability of and factors associated with the corneal deformation response, and evaluate its impact on IOP measurement. METHODS Forty normal and 140 glaucoma suspect/glaucomatous eyes of 104 individuals were prospectively included for repeated measurements of corneal deformation response by an ultra-high-speed Scheimpflug camera, followed by corneal hys...

A general technique for the periodic orbit quantization of systems with near-integrable to mixed regular chaotic dynamics is introduced. A small set of periodic orbits is sufficient for the construction of the semiclassical recurrence function up to, in principle, infinite length. As in our recent work the recurrence signal is inverted by means of a high resolution spectral analyzer (harmonic i...

PURPOSE To assess the biomechanical properties of corneas in patients with normal tension glaucoma (NTG) and to compare them with those of patients with primary open-angle glaucoma (POAG), ocular hypertension (OHT), and normal controls (N). METHODS Corneal hysteresis (CH), corneal resistance factor (CRF), Goldmann intraocular pressure (IOPg), and corneal compensated IOP (IOPcc) were obtained ...

BACKGROUND Our aim was to determine if there is a correlation between corneal biomechanical properties, endothelial cell count, and corneal pachymetry in healthy corneas. MATERIAL/METHODS Ninety-two eyes of all subjects underwent complete ocular examination, including intraocular pressure measurement by Goldmann applanation tonometer, objective refraction, and slit-lamp biomicroscopy. Topogra...

PURPOSE This study compared the measurements of intraocular pressure (IOP) and ocular pulse amplitude (OPA) using the Dynamic Contour Tonometry (DCT) over silicone hydrogel contact lenses of different modulus. Corneal biomechanics were also measured using the Ocular Response Analyzer (ORA). METHODS Forty-seven young (mean age 22.3 years, standard deviation 1.2 years) subjects had IOP, OPA, co...