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https://www.readbyqxmd.com/read/29757852/comparison-of-corneal-collagen-cross-linking-protocols-measured-with-scheimpflug-tomography
#1
Mehdi Shajari, Gabriela Sowwa, Gernot Steinwender, Christian Hofmann, Marie-Luise Pahlitzsch, Kerstin Petermann, Thomas Kohnen
PURPOSE: To evaluate the effectiveness of corneal collagen cross-linking with Dresden and accelerated protocols to treat keratoconus by Scheimpflug tomography. METHODS: Fifty-eight eyes with manifest keratoconus were measured preoperatively at least twice with the Pentacam. The difference of relevant variables for keratoconus progression (eg, D value, thinnest pachymetry, Kmax) was established. After evident progression, patients underwent corneal cross-linking (29 eyes with the Dresden protocol and 29 eyes with the accelerated protocol)...
May 1, 2018: Cornea
https://www.readbyqxmd.com/read/29747365/-a-preliminary-observation-of-implanting-a-double-eyelet-capsular-tension-ring-in-eyes-with-serious-lens-subluxation
#2
B Zhang, Y Q Huang, Q Z Cao, J Q Lin, Y Y Wang, D Y Zheng
Objective: To evaluate the clinical efficiency of an iris hook combined with a modified double-eyelet capsular tension ring (MCTR) in the treatment of serious lens subluxation. Methods: Retrospective case series. A total of 16 patients (20 eyes) with serious lens subluxation were enrolled in Zhongshan Ophthalmic Center from March 2016 to December 2016. All the patients had an iris hook inserted to support the capsule during the phacoemulsification. Then an MCTR was implanted and sutured onto the sclera. Both intraoperative and postoperative complications, such as posterior capsular opacification and macular edema, were recorded...
May 11, 2018: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/29730856/comparison-of-densitometric-profile-after-deep-lamellar-keratoplasty-with-two-different-techniques-for-treatment-of-keratoconus
#3
Mohammad Ghoreishi, Abolfazl Kashfi, Mohammadreza Peyman, Shahriar Hanjani, Mohaddese Mohammadinia, Mike Straiko
PURPOSE: To compare densitometric outcome of two techniques of deep lamellar keratoplasty using Pentacam HR corneal densitometry software. METHODS: Postoperative outcomes of 31 patients with big bubble (BB) and 28 patients with Melles (M) surgery for the treatment of keratoconus were evaluated. Data were gathered at least 3 months after the removal of all sutures including demographic data, uncorrected distance visual acuity (UCDVA), best spectacle-corrected visual acuity (BSCVA), refraction and endothelial cell count...
May 5, 2018: International Ophthalmology
https://www.readbyqxmd.com/read/29729256/comparing-change-in-anterior-curvature-after-corneal-cross-linking-using-scanning-slit-and-scheimpflug-technology
#4
Paul Z Lang, Praneetha Thulasi, Sumitra S Khandelwal, Farhad Hafezi, J Bradley Randleman
PURPOSE: To evaluate the correlation between anterior axial curvature difference maps following corneal cross-linking (CXL) for progressive keratoconus obtained from Scheimpflug-based tomography and Placido-based topography. DESIGN: Between-devices reliability analysis of randomized clinical trial data METHODS: Corneal imaging was collected at a single center institution pre-operatively and at 3, 6, and 12 months post-operatively using Scheimpflug-based tomography (Pentacam, Oculus Inc...
May 2, 2018: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/29718869/changes-of-corneal-high-order-aberrations-after-femtosecond-laser-assisted-in-situ-keratomileusis
#5
Jing Wang, Yanlin Ren, Kun Liang, Zhengxuan Jiang, Liming Tao
BACKGROUND: Femtosecond laser-assisted in situ keratomileusis (FS-LASIK) has gained widespread popularity as a safe, effective and predictable treatment for correcting myopia and myopic astigmatism.However, complications such as biomechanical changes, structural weakness, dry eye and induction of high-order aberrations (HOAs) have been associated with FS laser excision. The induction of HOAs has been reported to reduce quality of vision, leading to increased glare, halos, starburst and deterioration of contrast function corneal HOAs play a significant role in whole-eye aberration...
May 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29705008/repeatability-of-automatic-measurements-by-a-new-anterior-segment-optical-coherence-tomographer-combined-with-placido-topography-and-agreement-with-2-scheimpflug-cameras
#6
Giacomo Savini, Domenico Schiano-Lomoriello, Kenneth J Hoffer
PURPOSE: To evaluate the repeatability of automatic measurements by a new anterior segment optical coherence tomographer (AS-OCT) combined with Placido topography and their agreement with those provided by 2 rotating Scheimpflug cameras. SETTING: G.B. Bietti Foundation IRCCS, Rome, Italy. DESIGN: Evaluation of a diagnostic test instrument. METHODS: Unoperated eyes and eyes with previous myopic excimer laser surgery were analyzed...
April 25, 2018: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/29700651/comparison-of-anterior-segment-parameters-and-axial-length-measurements-performed-on-a-scheimpflug-device-with-biometry-function-and-a-reference-optical-biometer
#7
Maria Muzyka-Woźniak, Adam Oleszko
PURPOSE: To compare measurements of axial length (AL), corneal curvature (K), anterior chamber depth (ACD) and white-to-white (WTW) distance on a new device combining Scheimpflug camera and partial coherence interferometry (Pentacam AXL) with a reference optical biometer (IOL Master 500). To evaluate differences between IOL power calculations based on the two biometers. METHODS: Ninety-seven eyes of 97 consecutive cataract or refractive lens exchange patients were examined preoperatively on IOL Master 500 and Pentacam AXL units...
April 26, 2018: International Ophthalmology
https://www.readbyqxmd.com/read/29698993/evolution-of-keratoconus-from-diagnosis-to-therapeutics
#8
Lauren Marie Imbornoni, Charles Ninian John McGhee, Michael Wellington Belin
This review describes the evolution of the diagnosis and treatment of keratoconus from the earliest written description to present day. The first description was provided in 1736 by Benedict Duddell who described the prominent corneas of a fourteen-year-old boy. Throughout the 19th century, a variety of surgical procedures were proposed to manage the disease, such as surgically repositioning the pupil away from the cone, iris incarceration to produce a slit-like pupil, cauterization of the cone to produce a scar, and full thickness elliptical excision of the cone...
April 26, 2018: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/29685130/cataract-surgery-in-patients-with-corneal-opacities
#9
Yi-Ju Ho, Chi-Chin Sun, Hung-Chi Chen
BACKGROUND: Investigating the efficacy and safety of phacoemulsification with intraocular lens (IOL) implantation in corneal opacities. METHODS: This retrospective study was conducted in a tertiary medical center. Twenty-three eyes of 19 patients with cataracts and corneal opacities obscuring the pupillary center having received phacoemulsification with IOL insertion without any ancillary techniques were enrolled. The primary study outcome measures were uncorrected and best corrected visual acuity (BCVA), and complications...
April 23, 2018: BMC Ophthalmology
https://www.readbyqxmd.com/read/29684328/visual-outcomes-after-implantation-of-a-segmental-refractive-multifocal-intraocular-lens-following-cataract-surgery
#10
Thomas Kohnen, Eva Hemkeppler, Michael Herzog, Sabrina Schönbrunn, Nina DeLorenzo, Kerstin Petermann, Myriam Böhm
PURPOSE: To evaluate visual outcomes with particular attention to intermediate visual acuity (VA), of a segmental refractive multifocal intraocular lens (IOL) with optimized depth of focus (DoF) DESIGN: Prospective, noncomparative case series. METHODS: Setting: Department of Ophthalmology, Goethe University, Frankfurt/Germany. PATIENT OR STUDY POPULATION: Fifty eyes (25 patients) were included. INCLUSION CRITERIA: bilateral cataract, age >45 years, corneal astigmatism ≤0...
April 20, 2018: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/29681835/diagnostic-and-management-tool-for-monitoring-patients-implanted-with-a-shape-changing-corneal-inlay
#11
Ralph Chu, Briana R Lee
We report two cases that underwent corneal inlay implantation under a femtosecond flap. The first case had no complications during the postoperative period. Pentacam maps remained stable over time: corneal densitometry (CD) values had less than 2 units of change across visits up to 3 years. Axial/sagittal topography maps showed a stable Kmax (∼47 D), i.e., less than 1 D change between visits. The second case developed haze at 8 months postoperatively. CD increased by more than 4 units from 3 to 8 M and Kmax increased by 2...
January 2018: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/29681179/-femtosecond-laser-assisted-keratoplasty
#12
László Módis, Eszter Szalai, Zsuzsanna Flaskó, Bence Kolozsvári, András Berta
INTRODUCTION AND AIM: To present our results on femtosecond laser-assisted penetrating keratoplasty. PATIENTS AND METHOD: Twenty-five eyes of 25 patients underwent surgery with the following indications: pseudophakic bullous keratopathy (n = 10), keratoconus (n = 4), corneal dystrophy (n = 5), corneal scar (n = 4), band keratopathy (n = 2). Trephination of both the donor and recipient corneas were performed with VisuMax femtosecond laser device (Carl Zeiss Meditec AG, Jena, Germany)...
April 2018: Orvosi Hetilap
https://www.readbyqxmd.com/read/29675381/anterior-and-posterior-capsule-densitometry-levels-after-femtosecond-laser-assisted-cataract-surgery
#13
Txomin Alberdi, Javier Mendicute, Lucía Bascarán, Olatz Barandika, Javier Ruiz-Ederra
AIM: To analyze and compare five different variables over one year follow-up (1wk, 1, 3, 6 and 12mo): anterior capsule (AC), and posterior capsule (PC) area densitometry values, AC and PC linear densitometry values, and AC opening area reduction ratio after femtosecond laser-assisted cataract surgery. METHODS: This was a prospective comparative study. Seventy-one patients underwent femtosecond laser-assisted cataract surgery on single eye between June 2014 and December 2015...
2018: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/29661163/characteristics-of-keratoconic-patients-at-two-main-eye-centres-in-palestine-a-cross-sectional-study
#14
Yousef Shanti, Ithar Beshtawi, Sa'ed H Zyoud, Ahlam Abu-Samra, Areen Abu-Qamar, Reem Barakat, Reham Shehada
BACKGROUND: Keratoconus (KC) is a multifactorial, degenerative ectatic condition of the cornea. It usually manifests during late adolescence or the early twenties. A painless disease, KC may end with severe visual loss. The prevalence of KC in middle-eastern countries is much higher than in other regions of the world. This may be due to genetic and environmental risk factors and consanguinity. The goal of this study is to explore the demographic profile of Palestinian keratoconic patients...
April 16, 2018: BMC Ophthalmology
https://www.readbyqxmd.com/read/29627299/avoiding-misinterpretations-of-kappa-angle-for-clinical-research-studies-with-pentacam
#15
Manuel Rodríguez-Vallejo, David P Piñero, Joaquín Fernández
No abstract text is available yet for this article.
April 4, 2018: Journal of Optometry
https://www.readbyqxmd.com/read/29615834/corneal-clarity-measurements-in-patients-with-keratoconus-undergoing-either-penetrating-or-deep-anterior-lamellar-keratoplasty
#16
Khaled Alzahrani, Syarifah-Faiza Dardin, Fiona Carley, Arun Brahma, Debbie Morley, M Chantal Hillarby
Purpose: To compare the corneal clarity measurement between penetrating keratoplasty (PK) and deep anterior lamellar keratoplasty (DALK) in patients with keratoconus, using densitometry software for the Oculus Pentacam. Methods: A retrospective comparative study was carried out at Manchester Royal Eye Hospital. Data were collected 12-18 months after corneal transplantation for keratoconus, including postoperative corneal densitometry, best corrected visual acuity (BCVA), central corneal thickness (CCT), and other relevant clinical details...
2018: Clinical Ophthalmology
https://www.readbyqxmd.com/read/29594788/the-effects-of-chalazion-surgery-on-intraocular-pressure-and-corneal-topography
#17
Cagri Ilhan, Meltem Ozgul Yilmazoglu, Pelin Yilmazbas
PURPOSE: To evaluate the effects of chalazion surgery on intraocular pressure (IOP) and the biomechanical, topographic, and topometric properties of the cornea. METHODS: A total of 29 patients with upper eyelid chalazion were included in this study. All patients underwent preoperative and postoperative detailed ophthalmological examinations including scale of chalazion size; IOP (IOPcc and IOPg), corneal hysteresis, and corneal resistance factor measurements using ocular response analyser (ORA; Reichert Instruments, Depew, NY, USA); topographic and topometric properties of the cornea using Pentacam HR (Oculus GmbH, Wetzlar, HE, Germany)...
March 28, 2018: International Ophthalmology
https://www.readbyqxmd.com/read/29587977/influence-of-surface-light-scattering-and-glistenings-of-intraocular-lenses-on-visual-function-15-to-20-years-after-surgery
#18
Tetsuro Oshika, Hiroshi Ando, Yasushi Inoue, Shuichiro Eguchi, Yukio Sato, Toru Sugita, Tomohisa Nishimura, Ken Hayashi, Yoshifumi Fujita, Akira Miyata, Noriyuki Sasaki, Kazunori Miyata
PURPOSE: To assess the long-term influence of surface light scattering and glistenings of hydrophobic acrylic (Acrysof), silicone, and poly(methyl methacrylate) (PMMA) intraocular lenses (IOLs) on visual function. SETTING: Eleven surgical sites, Japan. DESIGN: Retrospective case series. METHODS: Patients who had cataract surgery with implantation of a hydrophobic acrylic, silicone, or PMMA IOL from 1994 to 2000 were examined...
February 2018: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/29582259/corneal-densitometry-after-accelerated-corneal-collagen-cross-linking-in-progressive-keratoconus
#19
Myriam Böhm, Mehdi Shajari, Matthias Remy, Thomas Kohnen
PURPOSE: To analyze changes in corneal densitometry 3 months after accelerated corneal collagen cross-linking (CXL) measured with Scheimpflug tomography. METHODS: In this study we reviewed charts and anterior segment data of patients who had undergone accelerated pulsed epithelium-off CXL (30 mW/cm2 for 4 min, 8 min total radiation time) for treatment of progressive keratoconus in the Department of Ophthalmology, Goethe University, Frankfurt, Germany. Visual, topographic, pachymetric and densitometric data were extracted before surgery and at the 3-month follow-up...
March 26, 2018: International Ophthalmology
https://www.readbyqxmd.com/read/29580103/distribution-of-keratometry-and-its-determinants-in-a-general-population-of-6-to-12-year-old-children
#20
Hassan Hashemi, Mohammad Saatchi, Mehdi Khabazkhoob, Mohammad Hassan Emamian, Abbasali Yekta, Akbar Fotouhi
PURPOSE: To determine the distribution of keratometry and its determinants in Iranian school children. METHODS: The present cross-sectional study was conducted in 2015 in Shahroud in the north of Iran. The entire rural population of elementary school children was invited to the study. In urban areas, cluster sampling was conducted. Pentacam HR (Oculus Inc., Lynnwood, WA) was used to measure the flat meridian, the steep meridian, and the mean keratometry. Linear regression was used to determine the associated variables with mean keratometry...
March 1, 2018: European Journal of Ophthalmology
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