Publications by authors named "Claudia Tosoni"
Purpose: to present the mid-term results of canaloplasty in a small cohort of corticosteroid glaucoma patients.
Material And Methods: Nine eyes from seven patients with various types of corticosteroid glaucoma in maximum medical therapy underwent canaloplasty. Patients underwent complete ophthalmic examination every six months.
Purpose: To present the mid-term results of a prospective multicenter study on canaloplasty surgery in chronic open-angle glaucoma.
Materials And Methods: A total of 218 eyes from 197 patients with open-angle glaucoma under maximum tolerated medical therapy underwent canaloplasty within a time period of 42 months in 3 different Italian eye centers. All patients underwent a complete ophthalmic examination every 6 months.
Purpose: To evaluate precision and accuracy of Corvis-ST, a new noncontact tonometer equipped with a high-speed Scheimpflug technology, which measures intraocular pressure (IOP), central corneal thickness (CCT), and corneal deformation parameters (CDPs). Relationships among IOP, CCT, and CDPs were also assessed.
Materials And Methods: This prospective, randomized study included 1 eye of 164 subjects (79 controls and 85 glaucoma patients), which underwent IOP measurements taken 3 times with Goldmann applanation tonometry (GAT) and Corvis-ST in random order.
Purpose: To evaluate the repeatability and accuracy of the applanation resonance tonometer (ART) used in the automatic servo-controlled version, and to evaluate the influence of central corneal thickness (CCT) on the ART intraocular pressure (IOP) measurements.
Methods: This prospective, randomized, single-centre study included one eye of 153 subjects (35 healthy volunteers and 118 patients with glaucoma). All participants underwent ultrasonic CCT measurement, followed by IOP evaluation with Goldmann applanation tonometer (GAT) and ART in random order.
Canaloplasty is usually indicated for eyes that have not undergone previous filtrating surgery for glaucoma. In some cases, however, "trabeculectomy" can be targeted anterior to the angle components, thus leaving Schlemm's canal integral and untouched. In the past 4 years of performing canaloplasty in our Glaucoma Clinic in Udine, a total of 6 eyes with previous failed trabeculectomy and elevated intraocular pressure (IOP) despite maximum tolerated medical therapy underwent canaloplasty.
View Article and Find Full Text PDFPurpose: To evaluate the optic disc damage staging system (ODDSS); a new clinical method of optic disc (OD) classification based on OD size, neural rim (NR) loss severity and localization. Accuracy, reproducibility, and reliability were studied. Agreement of ODDSS with the Heidelberg-Retina-Tomograph (HRT) results was evaluated.
View Article and Find Full Text PDFPurpose: To compare intraocular pressure (IOP) measurements taken with Pascal dynamic contour tonometry (DCT), the TonoPen and the Goldmann applanation tonometry (GAT). The influence of central corneal thickness (CCT) on IOP measurements taken with Pascal DCT and the TonoPen was evaluated.
Methods: One eye in each of 101 consecutive patients with primary open-angle glaucoma (POAG) underwent ultrasonic CCT measurement and IOP evaluation with GAT, Pascal DCT and the TonoPen in random order.
Purpose: To compare the abilities of scanning laser polarimetry with the variable corneal compensator (GDx VCC) with those of optical coherence tomography (Stratus OCT) in discriminating between healthy and early-to-moderate perimetric glaucomatous eyes.
Methods: A total of 95 glaucomatous patients (mean deviation - 3.7 +/- 3.
Purpose: To compare the intraocular pressure (IOP) readings taken with the new ICare tonometer and with the Goldmann applanation tonometer (GAT) and to evaluate the influence of central corneal thickness (CCT) on the IOP measurements.
Patients And Methods: One eye of 178 consecutive patients with primary open-angle glaucoma underwent ultrasonic CCT measurement, followed by IOP evaluation with the GAT and with the ICare tonometer. The deviation of ICare readings from GAT values, corrected according to the Doughty and Zaman formula, was calculated and correlated to CCT by a linear regression model.
Purpose: To determine if the N-30-F test with the new Humphrey Matrix instrument is comparable to the traditional frequency-doubling technology (FDT) N-30 test.
Methods: A sample of 47 eyes from 47 patients (five normal subjects, 27 with ocular hypertension and 15 with glaucoma) underwent visual field (VF) testing with standard automated perimetry, and with FDT, using the FDT N-30 program, and the Matrix N-30-F program (using the same 19 tested points, full-threshold strategy, but with an enhanced algorithm to reduce testing time). The plots, mean deviation (MD), pattern standard deviation (PSD), defect locations and test time were compared.
Purpose: To evaluate three new approaches for staging severity of glaucomatous visual field defects using frequency doubling technology.
Patients And Methods: One hundred and four patients with either ocular hypertension or chronic glaucoma were tested with both standard automated perimetry (SAP, 30-2 Humphrey threshold test) and frequency doubling technology (N-30 threshold test). Standard automated perimetry results were classified into four groups (normal tests, early defects, moderate defects, and severe defects) using the Glaucoma Staging System.