Publications by authors named "Emmanuel Guilbert"
Purpose: To evaluate the visual outcomes and fourth-order Zernike spherical aberrations induced with a customized change in corneal asphericity (ΔQ) correction of presbyopia combined with monovision for hyperopic patients.
Methods: Consecutive hyperopic patients who underwent presbyopic LASIK between September 2013 and July 2014 were included. For the non-dominant eyes, the aspheric ablation profile associated with a myopic refraction was planned using the Custom-Q nomogram (Alcon Laboratories, Inc.
Purpose: To evaluate the learning curve for graft preparation and graft unrolling during Descemet membrane endothelial keratoplasty (DMEK) and to assess the evolution of visual acuity gain and percentage cell loss with experience.
Methods: The first 109 DMEK procedures performed by a single surgeon (A.S.
Purpose: To evaluate the clinical impact of implanting donor tissue torn during preparation for the Descemet membrane endothelial keratoplasty procedure.
Methods: In this single-center retrospective analysis of consecutive cases, 10 cases with torn donor tissue from one surgeon's caseload of 175 procedures were analyzed and compared with control cases. Best-corrected visual acuity, endothelial cell density of the donor tissue measured by specular microscopy, and the recipient's central corneal thickness were recorded preoperatively and again 1, 3, and 6 months after surgery.
Purpose: To assess the repeatability of the corneal topography functions of Orbscan II (Bausch & Lomb, Rochester, NY), OPD-Scan III (Nidek, Gamagori, Japan), and iTrace (Tracey Technologies, Houston, TX) in keratoconic eyes and in a control group of normal patients.
Methods: In this prospective cohort study, patients were recruited between November 2011 and May 2012. Measurements were performed with a combined Placido-scanning slit system (Orbscan II) and two combined Placido-aberrometer systems (OPD-Scan III and iTrace).
Purpose: To determine the characteristics and risk factors for occurrence of opaque bubble layer (OBL) during femtosecond laser-assisted flap creation for LASIK.
Methods: One hundred ninety-eight eyes of 102 consecutive patients who underwent LASIK flap creation performed with the Alcon WaveLight FS200 laser (Alcon Laboratories, Inc., Fort Worth, TX) were retrospectively analyzed in a cohort study.
Purpose: To report and document a case of successful rainbow glare correction using undersurface ablation of the LASIK flap.
Methods: A 33-year-old woman was treated bilaterally for myopia using femtosecond laser-assisted LASIK with the FS200 femtosecond laser (Alcon Laboratories, Inc., Fort Worth, TX).
Purpose: 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.
Methods: Prospective, observational, and single-center pilot case series including 14 eyes of 14 patients consecutively scheduled for DMEK surgery. After injecting the graft into the anterior chamber, the graft orientation was assessed with the help of anterior segment OCT.
Purpose: To evaluate the ability to discriminate between normal and keratoconic corneas by analyzing intereye corneal asymmetry parameters and defining a score of similarity that outlines the normal range of asymmetry between right and left eyes.
Methods: This prospective, non-randomized study included 102 normal corneas of 51 patients and 64 keratoconic corneas of 32 patients. Topographic and tomographic parameters of the right and left eyes were extracted from an elevation and Placido-based corneal topography.
Purpose: To evaluate the effectiveness of the pupil center shift with changes in the state of pupil size and with other ocular variables.
Methods: Dynamic pupillometry with the Topolyzer Vario (Alcon Laboratories, Inc., Fort Worth, TX) was performed in 248 eyes of 124 patients scheduled for corneal laser refractive surgery.
Purpose: To evaluate repeatability of the AcuTarget (SensoMotoric Instruments, Teltow, Germany) measurements and compare them to those obtained with the OPD-Scan III (NIDEK, Inc., Fremont, CA).
Methods: Measurements were taken with the AcuTarget and OPD-Scan III in 62 eyes of 31 patients.
Purpose: To study the repeatability of the biomechanical waveform parameters measured with the Ocular Response Analyzer (Reichert Ophthalmic Instruments, Depew, NY) device in normal eyes and eyes after refractive surgery.
Methods: This was a prospective, comparative non-interventional study of a case series. Two hundred eyes of 100 patients were divided into five groups: normal eyes of patients younger than 30 years, normal eyes of patients between 30 and 50 years old, normal eyes of patients older than 50 years, eyes of patients with a history of LASIK, and eyes of patients with a history of photorefractive keratectomy.
Purpose: To report a case of rainbow glare following femtosecond laser-assisted LASIK (femto-LASIK) with the Wavelight FS-200 femtosecond laser (Alcon Laboratories, Inc., Fort Worth, TX).
Methods: A patient was treated bilaterally for myopia with femto-LASIK using the FS-200 femtosecond laser.
Purpose: To report a case of unilateral ectasia developing after LASIK in a patient with abnormal topography but normal tomographic indices.
Methods: Case report and literature review.
Results: A patient was treated bilaterally for myopia using LASIK.
Purpose: To identify risk factors for corneal graft rejection and rejection irreversibility.
Design: Retrospective cohort study.
Methods: setting: Institutional.
Purpose: To evaluate agreement in central corneal thickness (CCT), keratometry, and anterior and posterior elevation map measurements in normal corneas between a combined Placido-Scheimpflug system and a combined Placido-scanning-slit elevation topography system.
Setting: Department of Cataract & Refractive Surgery, Rothschild Foundation, Paris, France.
Design: Evaluation of diagnostic test or technology.
Purpose: To compare anterior lamellar keratoplasty (ALK) with the reference surgical technique (penetrating keratoplasty [PK]) for risk of rejection.
Design: Retrospective, comparative case series.
Methods: setting: Institutional.