To investigate the efficacy of topography and tomography indices combined in discriminant functions to detect mild ectatic corneas.The authors retrospectively reviewed data 143 eyes separated into three groups by Corneal Navigator OPD scanning system (Nidek, Gamagori, Japan): normal (N; LASIK surgery with a 2-year follow-up; n = 72), forme fruste keratoconus (N contralateral KC; FFKC; 40), KC (n 31). Topography indices, corneal thickness spatial profile (CTSP), anterior posterior curvature...

The purpose of this study was to evaluate the performance ChatGPT, a cutting-edge artificial intelligence (AI) language model developed by OpenAI, in successfully completing French version European Board Ophthalmology (EBO) examination and assess its potential role medical education knowledge assessment.ChatGPT, based on GPT-4 architecture, exposed series EBO questions French, covering various aspects ophthalmology. AI's evaluated comparing responses with correct answers provided...

To theoretically and experimentally assess a new aspheric diffractive trifocal intraocular lens (IOL).Centre Spatial de Liège, Belgium.Evaluation of diagnostic test or technology.The theoretical profile the IOL was designed using software simulation validated by optical calculation tools that enabled complete characterization. These data resulted in IOL. The allows improved intermediate vision without impairing near far favors distance mesopic conditions increasing halos glare perception...

PURPOSE: To compare the anterior and posterior corneal elevation maps between keratoconus-suspect eyes normal eyes. SETTING: Rothschild Foundation, AP-HP, University Paris VII, Hôpital Bichat Claude Bernard, Paris, France. METHODS: The surface elevations were analyzed compared in 60 myopic patients 48 patients. best-fit sphere radii, central thinnest pachymetries, aconic shape parameters (aconic radius, asphericity, toricity), 1.0 mm radius zone analyzed. correlations surfaces compared....

Purpose To assess the differences in optical performance of 9 multifocal IOLs using same bench and to propose a possible comparison for surgeons. Setting Rothschild Foundation, Paris, France. Design Experimental study. Methods Nine (Acrysof Restor +3.0 diopter [D] SN6AD1, Acrysof +4.0 D SN60D3, aspheric monofocal SN60WF, Acri.Lisa 366D, Finevision Micro F, Tecnis ZM900, Rezoom, Diffractiva Diff-s, Lentis Mplus D) were tested that complies with International Organization Standardization...

PURPOSE: To evaluate the repeatability of measurements with a double-pass system. SETTING: Rothschild Foundation, Paris, France. METHODS: Eyes were separated into 2 control groups (<30 years old and >40 years), post-refractive surgery group, cataract group. Measurements performed using Optical Quality Analysis System. The main outcome measures objective scattering index (OSI), cutoff frequency modulation transfer function (MTF), Strehl ratio. limit was obtained from individual standard...

To experimentally compare the optical performance of three types hydrophobic intraocular lenses (IOLs): extended depth focus, bifocal, and trifocal.The tested IOLs were: TECNIS ZMB00 (bifocal; Abbott Medical Optics, Park, IL), Symfony ZXR00 (extended focus; Optics), FineVision GFree (trifocal; PhysIOL, Liège, Belgium). Their surface topography was analyzed by microscopy. Modulation transfer function (MTF) spherical aberrations were determined on bench for variable pupil apertures with two...

To investigate the application of anterior corneal and ocular aberrations in detecting mildly ectatic corneas.This study retrospectively reviewed data 220 eyes separated into three groups by NIDEK Corneal Navigator System automated classification software: normal (N) (n = 123); forme fruste keratoconus (N topography with contralateral KC) 34); KC 63). Anterior were obtained optical path difference scan compared using a Kruskal-Wallis test. Evaluation these to discriminate between was...

Measuring corneal biomechanical properties may help detect keratoconus suspect corneas and eliminate the risk of ectasia after LASIK.Data 504 eyes separated into three groups were retrospectively reviewed: normal (n = 252), 80), 172). Corneal hysteresis (CH) resistance factor (CRF) measured with an ocular biomechanics analyzer.Mean was 10.6 +/- 1.4 (SD) mm Hg in group, compared 10.0 1.6 group 8.1 group. The mean CRF 9.7 1.7 7.1 Mean CH significantly different between (P < 0.001).CH alone...

PURPOSE: To evaluate the clinical results and safety obtained with a new type of multifocal intraocular lens (IOL) using trifocal design to achieve pseudoaccommodation. METHODS: A pilot observational study patients IOL (FineVision; PhysIOL, Liege, Belgium) implanted by 1 12 surgeons between March December 2010. Visual outcomes that were assessed postoperatively included uncorrected corrected distance, intermediate, near visual acuity. RESULTS: One hundred ninety-eight eyes 99 analyzed....

To describe the utility of a new intraoperative optical coherence tomographer (OCT) to evaluate endothelio-Descemet graft orientation during Descemet membrane endothelial keratoplasty (DMEK) procedures.Prospective, observational, and single-center pilot case series including 14 eyes patients consecutively scheduled for DMEK surgery. After injecting into anterior chamber, was assessed with help segment OCT. The surgical time unfolding were measured. postoperative measurements included...

Purpose: To evaluate risk factors associated with keratoconus in a case-control setting. Methods: This single center, prospective, study was carried out from May 2014 to November 2017 at the Rothschild Foundation (Paris, France). Two hundred two patients and 355 control were investigated followed by ophthalmologist. Data regarding multiple variables gathered, including eye rubbing, pattern of dominant hand, allergies, history dry eye, screen time, sleep position, night-time work. Results:...

Abstract Purpose To evaluate eye rubbing and sleeping position in patients with Unilateral or Highly Asymmetric Keratoconus (UHAKC). Methods Case-control study of consecutive UHAKC diagnosed at the Rothschild Foundation. Controls were age- sex-matched, randomly selected refractive surgery clinic patients. Patients self-administered questionnaires regarding their family history keratoconus, rubbing, habits. All eyes underwent a comprehensive ocular examination. Logistic regression was used to...

To identify differences in corneal hysteresis (CH) and central thickness (CCT) between healthy glaucomatous patients.Retrospective observational study. One hundred thirty-three eyes of 75 58 patients were included. CH was measured each patient using Ocular Response Analyzer. CCT determined by ultrasonic pachymetry. For patient, one eye randomly selected. We used a Student t-test to search for significant the different groups (p<0.05).In eyes, mean values 10.46 +/- 1.6 8.77 1.4 mm Hg,...

To assess the biomechanical properties of corneas in patients with normal tension glaucoma (NTG) and to compare them those primary open-angle (POAG), ocular hypertension (OHT), controls (N).Corneal hysteresis (CH), corneal resistance factor (CRF), Goldmann intraocular pressure (IOPg), compensated IOP (IOPcc) were obtained using an response analyzer for 28 eyes 14 NTG, 75 38 chronic POAG, 53 27 OHT, 44 22 N controls. applanation tonometry (IOPGA) ultrasonic central thickness (CCT) also...

To investigate the efficacy of SCORE Analyzer (Bausch+Lomb TechnoLas, Germany) in detecting forme fruste keratoconus (FFKC) Asian eyes and validate its usefulness as a risk assessment system for post-laser situ keratomileusis (LASIK) keratectasia.We retrospectively evaluated corneal topographies with Orbscan IIz independently tested them through masked investigators. Eyes were classified into 2 groups: (1) The FFKC group included clinically topographically normal definite contralateral eye....

Improvement in biometry and formulas has raised the bar for accurate intraocular lens (IOL) power calculation. However, when we look closely at performance of a specific IOL model, often find that prediction error varies with implant power. This phenomenon no explanation other than optic design shifted over range, thereby disrupting assumptions calculations. By this report, call industry to be more transparent disclose basic information about is important The relevant concerns refractive...

To describe a new technique for preparing corneal allogenic ring segments (CAIRSs) using femtosecond laser technology.

Purpose: The purpose of this study was to develop a simplified method approximate constants minimizing the standard deviation (SD) and root mean square (RMS) prediction error in single-optimized intraocular lens (IOL) power calculation formulas. Methods: introduces analytical formulas determine optimal constant value for SD RMS IOL These were tested against various datasets containing biometric measurements from cataractous populations included 10,330 eyes 4 different models. evaluated...

To measure and compare total, corneal, internal ocular aberrations using combined wavefront analysis corneal topography in eyes with keratoconus normal corneas.This prospective study comprised of patients myopic seeking refractive surgery. Patients diagnosed a classification "normal" or "keratoconus" on the NIDEK Corneal Navigator disease screening software were selected for inclusion this study. The group 99% similarity. In group, only one eye per patient was randomly based randomization...