Search results for " cornea"
showing 10 items of 98 documents
Distacco di retina regmatogeno primario ed opacità corneali.
2008
Quantitative corneal anatomy: evaluation of the effect of diabetes duration on the endothelial cell density and corneal thickness.
2014
Purpose To evaluate the differences in endothelial cell density (ECD) and central corneal thickness (CCT) between type II diabetic patients and age-matched healthy controls, and determine the impact of time from diagnosis. Methods This is a comparative study of 77 eyes of type II diabetic patients (33 males, 44 females) and 80 eyes of healthy subjects (42 males, and 38 females) whose ages ranged from 38 to 56 years. CCT, ECD, HbA1c levels, and Goldmann tonometry were measured. Results The CCT was significantly higher and the ECD significantly lower in long-term diabetic patients (10 years + since diagnosis) when compared with short-term diabetic patients (<1 year since diagnosis) and contro…
DSAEK sottile e ultrasottile
2014
Postoperative Repositioning of Inverted Descemet Membrane Endothelial Keratoplasty Grafts
2019
Item does not contain fulltext PURPOSE: To present 4 cases of postoperative repositioning of inverted grafts after Descemet membrane endothelial keratoplasty (DMEK). METHODS: Retrospective case reports of 4 patients presenting with subtotal to total graft detachment after DMEK, most probably owing to upside-down graft positioning. Graft repositioning was performed 1 to 14 days after initial DMEK surgery. In 3 cases (cases 1, 3, and 4), repositioning was performed without removing the graft from the anterior chamber (AC), whereas for case 2, the graft had to be removed from the AC to attain correct graft orientation. RESULTS: In all 4 cases, the initially upside-down DMEK grafts could be suc…
Tratamiento de las ectasias corneales asociadas a LASIK con anillos intraestromales
2022
INTRODUCCIÓN: La ectasia corneal es una de sus complicaciones más graves de la cirugía LASIK. Está asociada a un adelgazamiento y un progresivo incurvamiento corneal y los anillos intracorneales (ICRS) se han propuesto como opción terapéutica debido a que inducen un aplanamiento. OBJETIVO: Evaluar los cambios producidos por los ICRS en pacientes diagnosticados de ectasias secundarias a LASIK. MATERIAL Y MÉTODOS: Es un estudio retrospectivo donde se incluyeron 26 ojos con ectasia post-LASIK los cuales fueron tratados con ICRS tipo Ferrara (AJL, Vitoria). Se les realizó un examen refractivo (agudeza visual (AV) y la refracción subjetiva). Mediante Pentacam®HR (Oculus: OtikgerateGmbH, Wetzlar,…
Le incisioni rilassanti limbari per la correzione dell'astigmatismo nei soggetti con impianto di IOL multifocali
2004
Do Age and Sex Play a Role in the Intraocular Pressure Changes after Acrobatic Gymnastics?
2021
To evaluate the effects of an acrobatic gymnastics (AG) training session on intraocular pressure (IOP), a familiarization session was employed to confirm the participant’s suitability for the study. Forty-nine gymnasts (63.27% females, 18–40 years old) voluntarily agreed to participate. As age, sex, baseline IOP, and central corneal thickness (CCT) were considered as potential predictors of the IOP variations, in the second session measurements of the above parameters were taken before and after 90 min of AG. A mixed-factorial analysis of variance evaluated differences. Linear regression was conducted to potentially predict the IOP variation with the exercise. After the scheduled exercise, …
The use of in vivo confocal microscopy in fungal keratitis – Progress and challenges
2022
Fungal keratitis (FK) is a serious and sight-threatening corneal infection with global reach. The need for prompt diagnosis is paramount, as a delay in initiation of treatment could lead to irreversible vision loss. Current “gold standard” diagnostic methods, namely corneal smear and culture, have limitations due to diagnostic insensitivity and their time-consuming nature. PCR is a newer, complementary method used in the diagnosis of fungal keratitis, whose results are also sample-dependent. In vivo confocal microscopy (IVCM) is a promising complementary diagnostic method of increasing importance as it allows non-invasive real-time direct visualization of potential fungal pathogens and mani…
Posterior chamber phakic intraocular lenses after penetrating keratoplasty.
2009
Purpose To evaluate the efficacy, predictability, and safety of a phakic posterior chamber intraocular Collamer lens (ICL) after penetrating keratoplasty (PKP). Setting Fernandez-Vega Ophthalmological Institute, Oviedo, Spain. Methods A myopic or toric ICL was implanted after PKP in eyes unable to wear glasses or contact lenses and for which corneal laser surgery was contraindicated. The uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), refractive error, and endothelial cell count were recorded preoperatively and 24 months postoperatively. Results Preoperatively, the 15 eyes had myopia from −2.00 to −17.00 diopters (D) or astigmatism from −1.50 to −7.00 D. …
Corneal thickness differences between type 2 diabetes and non-diabetes subjects during preoperative laser surgery examination
2016
Aims To evaluate the differences in corneal thickness between type 2 diabetes subjects with HbA1c under 7.0% and non-diabetes subjects during their preoperative laser surgery examinations. Methods The mean of five consecutive corneal thickness measurements at the central and mid-peripheral cornea was obtained by means of noncontact scanning-slit corneal topography (Orbscan Topography System II; Orbscan, Inc., Salt Lake City, UT, USA) in 35 myopic non-insulin dependent type 2 diabetes subjects (17 males and 18 females) and 48 healthy myopic controls (23 males and 25 females). Results The corneal thickness values at the central and mid-peripheral cornea were significantly higher in the diabet…