Search results for "Ophthalmology"
showing 10 items of 1738 documents
Scheimpflug biometry of the anterior segment after implantation of foldable iris-fixated lenses.
2006
ABSTRACT PURPOSE: To evaluate intraocular dimensions of the anterior segment of myopic phakic eyes after implantation of foldable iris-fixated lenses. METHODS: Seventeen myopic eyes that received a foldable iris-fixated phakic intraocular lens (PIOL) were assessed. Distances between the cornea and the IOLoptic edge and between the IOL optic and the crystalline lens were evaluated using Scheimpf lug photography 3 months postoperatively. RESULTS: The average postoperative distance between the central corneal endothelium and the anterior surface of the IOL was 2.01±0.26 mm. The distance between the corneal endothelium and the peripheral edge of the IOL averaged 1.32±0.18 mm at the 12 o'clock p…
Effects of intraocular cefotaxime on the human corneal endothelium
2001
Abstract Purpose To ascertain whether 0.4 mL of cefotaxime 0.25% applied intracamerally causes toxic alteration of the human corneal endothelium. Methods In this prospective randomized masked study, 66 patients had cataract extraction using phacoemulsification, a frown incision, and implantation of a poly(methyl methacrylate) intraocular lens. This was followed by intraocular injection of 0.4 mL of cefotaxime 0.25% or balanced salt solution (BSS®). Contact specular microscopy and photography were performed preoperatively and 1 to 4 days and 3 months postoperatively. Results In the cefotaxime group, the mean endothelial cell count was 2729 cells/mm 2 ± 474 (SD) preoperatively, 2520 ± 462 cel…
Corneal tattooing: an alternative treatment for disfiguring corneal scars.
2002
Background: The performance and results of corneal tattooing are described in a case series of 11 patients suffering from a disfiguring corneal scar using a technique similar to conventional dermatography. Methods: Drawing ink in different shades was applied into the anterior corneal stroma by punctures performed with a conventional spatula needle. Results: Up to 4 years after surgery all patients still had satisfactory staining of the formerly cosmetically disfiguring corneal scar. Conclusion: Tattooing of unsightly corneal scars proved to be an efficient and easy to perform technique, yielding acceptable results during follow up.
Changes in the anterior chamber during accommodation assessed with a Scheimpflug system.
2014
Purpose To study changes in the anterior chamber depth (ACD), anterior chamber angle, and pupil diameter with accommodation. Setting University of Valencia, Valencia, Spain. Design Evaluation of diagnostic technology. Methods A rotating Scheimpflug camera (Pentacam HR) was used to measure changes in the ACD, anterior chamber angle, and pupil diameter with accommodation. Peripheral ACD was measured at the corneal center and 2.0 mm away from it in the nasal, superior, temporal, and inferior directions. The anterior chamber angle was computed as the mean anterior chamber angle of the entire eye. All measurements were obtained with accommodation stimuli ranging from +1.0 to −4.0 diopters (D) in…
Pilot study for the evaluation of morphological and functional changes in retinal blood flow in patients with insulin resistance and/or type 2 diabet…
2012
Background: The aim of this study was to investigate early morphological and functional pathology in the retinal micro-circulation in patients with insulin resistance and/or type 2 diabetes mellitus (T2DM). Methods: Fifty-four subjects, without features of retinopathy under ophthalmological investigation, were recruited for study participation and were classifed into three study groups according to their metabolic staging: (1) Group C comprised nondiabetic, insulin-sensitive subjects with a BMI <28kg/m2; (2) Group IR comprised nondiabetic, insulin-resistant, obese subjects with a BMI ≥28 kg/m2; and (3) Group DM comprised patients with manifested T2DM. Retinal microvascular blood flow was…
Comparison of cyclodeviation and duction measurement in Graves' orbitopathy patients using different devices
2011
To compare measurement outcomes of different devices measuring cyclodeviation and ductions in Graves' orbitopathy (GO) patients. Cyclodeviation in GO patients was measured using the Harms tangent screen (HTS), the cycloforometer of Franceschetti, and the synoptometer. Ductions were measured using the modified perimeter, the Goldmann perimeter and the Maddox tangent scale (MTS). In 13 patients, cyclodeviation in primary position, up-, and downgaze was measured with the above-mentioned devices. The mean differences ranged from 0.3º to 3.1º and were smallest between the HTS and the cycloforometer (89% of all measurements within 2º difference). Measurement of abduction, adduction, elevation, an…
Trochlear palsies caused by isolated trochlear schwannomas.
2010
To describe clinical features and management of 4 patients suffering from unilateral superior oblique palsies due to MRI-documented trochlear nerve schwannomas.Chart reviews of 4 patients seen at the departments of ophthalmogy and neurology at the University of Mainz.All four patients were male, aged 36 to 72 years at initial presentation. None suffered from neurofibromatosis. The history of double vision prior presentation was 9 months to 13 years, follow-up time was 9 to 156 months. Two patients didn't receive any intervention: one remained stable over the follow-up time of 9 months. In patient #2, fourth nerve palsy was diagnosed 13 years prior to confirmation of a trochlear schwannoma b…
Assessment and diagnosis of suspected glaucoma in patients with mucopolysaccharidosis
2015
Purpose The mucopolysaccharidoses (MPS) are a group of rare lysosomal storage disorders, characterized by the accumulation of glycosaminoglycans within multiple organ systems including the eye. This study aimed to determine the prevalence of glaucoma in patients with MPS, as well as the characteristics, diagnosis and management of patients with MPS and glaucoma. Methods A multicentre retrospective case-note review was carried out by ophthalmologists from four tertiary referral centres to identify patients with MPS who had been treated for glaucoma. Clinical ophthalmological data were collected using standardized data collection forms. Results Fourteen patients were identified (27 eyes) of 2…
Corneal Biomechanical Parameters With Corneoscleral Contact Lenses in Post-Laser In Situ Keratomileusis Eyes
2018
Objective: To evaluate corneal biomechanical parameters wearing corneoscleral contact lenses (CScL) in patients with irregular corneas after laser in situ keratomileusis (LASIK). Methods: Data from patients fitted with CScL because of corneal surface irregularities after complicated LASIK surgery were selected by two eye clinics. Previously and after 1 year of CScL fitting, corneal hysteresis (CH), corneal resistance factor (CRF), corneal-compensated intraocular pressure (IOPcc), and central corneal thickness were evaluated. In addition, visual acuity, subjective comfort, and wearing time CScL were reported. Results: The study comprised 27 eyes. Statistically significant differences were fo…
Type A Behavior Pattern
2012
Aim : To evaluate the presence of type A behavior in patients affected by open-angle glaucoma (OAG) and the possible role of psychophysiological stress as a risk factor for OAG. Materials and methods Fifty patients, 30 women and 20 men, affected by OAG, underwent ophthalmological examination consisting of complete biomicroscopy, tonometry and daily tonometric curve, examination of the visual field by means of computerized perimeter "Octopus 1-2-3," and its assessment with the Glaucoma Staging System 2, morphologic monitoring of the retinal nerve fiber layer with GDx VCC and psychological assessment (Hamilton Anxiety Rating Scale) to evaluate the presence of anxiety and its level; type A/B p…