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Corneal surgery

Rachel B Matusow, Ian P Herring, J Phillip Pickett, Natalia Henao-Guerrero, Stephen R Werre
OBJECTIVE To assess the effects of topically applied 2% dorzolamide hydrochloride-0.5% timolol maleate ophthalmic solution (DHTM) on incidence and severity of postoperative ocular hypertension (POH; ie, intraocular pressure [IOP] > 25 mm Hg) in dogs undergoing cataract extraction by phacoemulsification. DESIGN Randomized, masked, controlled study. ANIMALS 103 dogs (180 eyes). PROCEDURES Pertinent history, signalment, and ophthalmic examination findings were recorded. Dogs received 1 drop of DHTM or sham treatment solution (sterile, buffered, isotonic eye drops) in both eyes 14 hours and 2 hours before anesthetic induction and at the time of corneal incision closure (ie, end of surgery); IOPs were assessed by rebound tonometry 2, 4, 6, and 8 hours after surgery and between 7:30 and 8:00 am on the following day...
November 1, 2016: Journal of the American Veterinary Medical Association
Qing Wang, Wenwen Liu, Yili Wu, Yan Ma, Guiqiu Zhao
BACKGROUND: An investigation was carried out to find the distribution of central corneal thickness (CCT) and the association between CCT and ocular factors in a cohort of myopic Chinese adults who underwent laser refractive surgery. METHODS: Medical records of 1,190 subjects (754 males) aged from 18 to 44 years (21.5 ± 3.5 years for males and 24.9 ± 5.5 years for females) undergoing myopic refractive surgery were filtered and analysed. Each parameter was stratified by gender and eye, respectively...
October 18, 2016: Clinical & Experimental Optometry: Journal of the Australian Optometrical Association
Pengfei Liu, Wenxiang Zhong, Chenlong Liao, Min Yang, Wenchuan Zhang
Therapeutic strategy is controversial and not yet uniform for patients with trigeminal neuralgia (TN) and persistent or recurrent facial pain after microvascular decompression, percutaneous radiofrequency thermocoagulation (PRT), or Gamma Knife surgery. The outcomes and risks of PRT for these patients are not clearly understood. The authors performed a retrospective study of 84 patients with persistent or recurrent TN after surgery who then underwent PRT between 2007 and 2013. Data were obtained with chart review and telephone interviews...
October 14, 2016: Journal of Craniofacial Surgery
Allen O Eghrari, Shivakumar Vasanth, Jiangxia Wang, Farnoosh Vahedi, S Amer Riazuddin, John D Gottsch
PURPOSE: Fuchs dystrophy is the leading indication of corneal transplantation in the United States. A CTG18.1 trinucleotide repeat in TCF4 correlates with increased severity in Fuchs dystrophy; however, quantitative estimates of increased transplantation risk, including effects of age and sex, are unclear. METHODS: In a tertiary institution clinical practice, 574 participants were enrolled in a longitudinal study of Fuchs dystrophy after slit-lamp biomicroscopy confirmed significant central guttae and/or corneal transplantation in both eyes...
October 14, 2016: Cornea
Yair Rubinstein, Chen Weiner, Adi Einan-Lifshitz, Noa Chetrit, Nadav Shoshany, David Zadok, Isaac Avni, Eran Pras
PURPOSE: This study reports the presentation of 2 families with macular corneal dystrophy (MCD). The aim of this study was to show whether ultrasound biomicroscopy (UBM) can, based on posterior changes of the cornea in MCD, assist in the choice of surgery, either anterior lamellar keratoplasty (DALK) or penetrating keratoplasty (PK), compared with optical coherence tomography (OCT) and Scheimpflug. METHODS: Six patients with MCD were examined for their best-corrected visual acuity, slit-lamp, OCT, UBM, and Scheimpflug findings...
October 14, 2016: Cornea
Negin Amirshekarizadeh, Hassan Hashemi, Ebrahim Jafarzadehpur, Ali Mirzajani, Abbasali Yekta, Mehdi Khabazkhoob
PURPOSE: To determine the effect of cyclopentolate, tropicamide, and artificial tear drops on higher-order aberrations (HOAs) in normal eyes with OPD-Scan III (Nidek Inc., Tokyo, Japan). METHODS: In this study, 189 eyes of individuals aged 20 to 35 years were selected as samples. Inclusion criteria were a corrected visual acuity of 20/20 or better, a minimum size of about 5 mm for the pupil in the dark, hyperopia and myopia less than 5 D, and astigmatism less than 2 D...
September 30, 2016: Eye & Contact Lens
Yoav Nahum, Irit Bahar, Massimo Busin
PURPOSE: To report the use of Descemet stripping automated endothelial keratoplasty (DSAEK) for treatment of sterile corneal perforations accompanying endothelial decompensation. METHODS: In this multicenter interventional case series, we reviewed the medical records of all tectonic DSAEK surgeries performed at Villa Serena-Villa Igea private Hospitals (Forlì, Italy) and Rabin Medical Center (Petach Tikva, Israel) between January 2014 and March 2016. RESULTS: Three patients with endothelial decompensation and sterile corneal perforation (n = 2) or impending corneal perforation (n = 1) underwent DSAEK between 2014 and 2015 at Villa Igea Hospital, Forlì, Italy, and Rabin Medical Center, Petach Tikva, Israel...
October 5, 2016: Cornea
Claudia E Perez-Straziota, J Bradley Randleman
PURPOSE OF REVIEW: This article describes different strategies for corneal measurements and/or intraocular lens (IOL) calculations and proposes a systematic approach for IOL selection in patients who have undergone laser corneal refractive surgery. RECENT FINDINGS: Corneal measurements and IOL calculations cannot be obtained accurately with the standard measuring technologies and formulas in patients with history of laser corneal refractive surgery; therefore a variety of methods and formulas, some of which required prerefractive surgery data, have been proposed to improve the accuracy of measurements and calculations...
September 29, 2016: Current Opinion in Ophthalmology
Uri Elbaz, Kamiar Mireskandari, Nasrin Tehrani, Carl Shen, Saad Khan, Sara Luck, Asim Ali
PURPOSE: To establish a normative database of endothelial cell density (ECD) using in-vivo specular microscopy in children under 5 years old. DESIGN: Cross sectional study. METHODS: Specular microscopy was performed during a clinic visit in cooperative children in the standard upright position. In uncooperative children, specular microscopy was performed in the lateral decubitus position under general anesthesia, prior to surgery for other reasons...
October 13, 2016: American Journal of Ophthalmology
Sotiria Palioura, Kathryn Colby
PURPOSE: To evaluate the feasibility of Descemet stripping endothelial keratoplasty using grafts preloaded by an eye bank in a commercially available insertion device. METHODS: In this retrospective case series, a series of 35 eyes in 34 consecutive patients who underwent Descemet stripping endothelial keratoplasty for Fuchs endothelial dystrophy or previously failed full-thickness grafts at a single tertiary care center from March 2013 to March 2014 was included...
October 12, 2016: Cornea
Christophe Panthier, Romain Courtin, Emmanuel Guilbert, Damien Gatinel, Alain Saad
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...
October 12, 2016: Cornea
Fernanda Pacella, Enzo Agostinelli, Sandra Cinzia Carlesimo, Marcella Nebbioso, Roberto Secondi, Michele Forastiere, Elena Pacella
BACKGROUND: Ozurdex is a 700 mcg dexamethasone intravitreal implant, approved for the management of macular edema secondary to retinal vein occlusion, and other related pathoglogiesAnterior chamber dislocation of Ozurdex represents an uncommon complication of the intravitreal injection, which can be managed by repositioning the implant into the vitreous cavity. We describe the case of a successful repositioning of an Ozurdex implant by mobilization and subsequent balanced saline solution injection in the anterior chamber...
October 13, 2016: Journal of Medical Case Reports
Natasha Pahuja, Nimisha R Kumar, Rushad Shroff, Rohit Shetty, Rudy M M A Nuijts, Anuprita Ghosh, Abhijit Sinha-Roy, Shyam S Chaurasia, Rajiv R Mohan, Arkasubhra Ghosh
Purpose: In this study, we elucidated the differential expression of a set of local molecular factors in ectatic cone area of the cornea to uncover a functional cause for focal corneal weakening characteristic of the keratoconus (KC) disease. Methods: All human corneal samples were collected after approval of Institutional Ethics Committee and informed consent. Keratoconus patients were classified based on clinical parameters, topographical features, and structural deformity...
October 1, 2016: Investigative Ophthalmology & Visual Science
Avner Belkin, Adi Abulafia, Adi Michaeli, Shay Ofir, Ehud I Assia
BACKGROUND: Temperature profiles at the corneal wound of coaxial mini-incision (2.4 mm) cataract surgery and sleeveless micro-incision (1.1 mm) cataract surgery were compared. DESIGN: Prospective, controlled, paired-eye clinical trial conducted in a tertiary care hospital PARTICIPANTS: Twenty patients with mild to moderate bilateral nuclear sclerotic cataract. METHODS: Twenty patients underwent bilateral cataract surgery within a one-month period...
October 12, 2016: Clinical & Experimental Ophthalmology
Akilesh Gokul, Dipika V Patel, Grant A Watters, Charles N J McGhee
BACKGROUND/AIMS: To determine if significant progression of disease occurs in older, non-contact lens wearing, subjects with keratoconus and to identify potential predictive factors. METHODS: Clinical and computerised corneal topography records of subjects with keratoconus attending a specialist optometry practice were retrospectively analysed to identify those aged ≥30 years, with ≥2 consultations ≥12 months apart, no contact lens wear and no corneal scarring, surgery or corneal hydrops...
October 11, 2016: British Journal of Ophthalmology
Yusuf Koçluk, Emine Alyamaç Sukgen
PURPOSE: This study aimed to report the results of therapeutic penetrating keratoplasty (TPKP) performed at early and late stage of keratitis. METHODS: The study involved patients who underwent TPKP surgery due to bacterial, fungal, or mixed (bacterial and fungal) keratitis. The patients were divided into two groups. Group 1 (13 patients) was the patients operated at early stage of corneal abscess formation or in 15 days after the start of keratitis and group 2 (12 patients) was the patients operated at late stage of keratitis or after at least 15 days after the initial appearance of symptoms...
October 8, 2016: International Ophthalmology
Tim Schultz, H Burkhard Dick
PURPOSE: To report a small-aperture intraocular lens (IOL) implantation after corneal trauma. METHODS: Case report. RESULTS: A 17-year-old boy with corneal scars, iris defect, and aphakia after perforating trauma in the right eye was scheduled for small-aperture IOL (IC-8; AcuFocus, Irvine, CA) implantation under general anesthesia. No intraoperative complications were observed. Six months after surgery, the uncorrected distance and near visual acuity increased significantly...
October 1, 2016: Journal of Refractive Surgery
Kenneth J Hoffer, Giacomo Savini
PURPOSE: To investigate agreement between the ocular biometry measurements provided by a newer optical biometer, the AL-Scan (Nidek Co, Ltd., Gamagori, Japan) and those provided by the IOLMaster 500 (Carl Zeiss Meditec, Jena Germany), which are both based on partial coherence interferometry. METHODS: Axial length, corneal power, and anterior chamber depth (corneal epithelium to lens) were measured in 86 eyes of 86 patients scheduled for cataract surgery using both biometers...
October 1, 2016: Journal of Refractive Surgery
Manli Liu, Jianchao Wang, Wen Zhong, Danyang Wang, Yugui Zhou, Quan Liu
PURPOSE: To evaluate the clinical results of suction loss in eyes during small incision lenticule extraction (SMILE). METHODS: This prospective paired-eye case study enrolled 8,490 eyes of 4,296 patients, of which 35 eyes experienced suction loss during the SMILE procedure while being treated for myopia or myopic astigmatism. The eyes with suction loss were re-treated with SMILE, femtosecond laser-assisted LASIK (FS-LASIK), or pseudo SMILE, and the fellow eyes were treated with SMILE...
October 1, 2016: Journal of Refractive Surgery
Ting Zhang, Yuan Sun, Shengbei Weng, Manli Liu, Yugui Zhou, Xiaonan Yang, Aleksandar Stojanovic, Quan Liu
PURPOSE: To analyze early clinical outcomes of aspheric micro-monovision LASIK for correction of presbyopia and myopia with or without astigmatism. METHODS: Prospective, non-comparative case series of 80 eyes of 40 patients with a mean age of 43.4 ± 4.9 years (range: 38 to 63 years) treated bilaterally using an aspheric micro-monovision protocol. The target refraction was plano for the distance eye and between -0.75 and -2.25 diopters (D) for the near eye. Visual acuity, ocular aberrations, contrast sensitivity, corneal topography, amplitude of accommodation, binocular sensorial function, and satisfaction score questionnaires were evaluated at 3 months after surgery...
October 1, 2016: Journal of Refractive Surgery
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