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Veterinary Ophthalmology

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https://www.readbyqxmd.com/read/28181368/diamond-burr-debridement-vs-grid-keratotomy-in-canine-scced-with-scanning-electron-microscopy-diamond-burr-tip-analysis
#1
Chloe B Spertus, Josef M Brown, Elizabeth A Giuliano
OBJECTIVES: (i) Compare the outcome of canine SCCED treated with grid keratotomy (GK) or diamond burr debridement (DBD); (ii) Serially evaluate morphologic and elemental composition changes to diamond burr tips. ANIMALS STUDIED: A total of 91 eyes of 88 canine SCCED patients treated at the University of Missouri (2005-2015); 75 fresh cadaver porcine globes. PROCEDURES: (i) Medical records were reviewed retrospectively. Data were analyzed for age, sex, breed, procedure performed, eye(s) on which the procedure was performed, time to healing after a single surgical procedure, performance of a second surgical procedure, contact lens placement, and postprocedural complications...
February 9, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28164422/effect-of-prophylactic-topical-hypotensive-medications-in-reducing-the-incidence-of-postoperative-ocular-hypertension-after-phacoemulsification-in-dogs
#2
D Dustin Dees, Kate J Spahn, Lynsey Smith Wagner, Andrew Greller, Danielle Paglia, Micki D Armour, Richard Madsen
OBJECTIVE: To determine whether topical hypotensive medications prevent postoperative ocular hypertension (POH) after phacoemulsification. ANIMALS STUDIED: 52 client-owned dogs (88 eyes). PROCEDURES: Diabetic and nondiabetic dogs having undergone phacoemulsification were included in this retrospective study. The control group received no ocular hypotensive medications. The treatment groups received latanoprost, dorzolamide, or dorzolamide/timolol, beginning immediately after surgery, for 2-week duration...
February 6, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28150426/reproducibility-and-repeatability-of-optical-coherence-tomography-imaging-of-the-optic-nerve-head-in-normal-beagle-eyes
#3
Alexandra M Bemis, Christopher G Pirie, Alexander J LoPinto, Louise Maranda
OBJECTIVE: To assess the reproducibility and repeatability of an optical coherence tomography (OCT) device for imaging the optic nerve region of normal canines. ANIMALS STUDIED: Twelve clinically healthy beagles. PROCEDURES: All animals were anesthetized, and an OCT device was used to image the optic disk region. Total disk area and retinal nerve fiber layer (NFL) thickness in eight segments were obtained from each image. Images were collected by two operators in succession and each operator took five scans, repositioning the device between measurements...
February 1, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28095610/uveal-schwannoma-in-a-brown-eyed-dog
#4
Todd L Marlo, Elizabeth A Giuliano, Cecil P Moore, Gillian C Shaw, Leandro B C Teixeira
An eleven-year-old, female spayed Boxer dog was diagnosed with a uveal schwannoma (formerly known as the spindle cell tumor of the blue-eyed dog or SCTBED) despite having a uniformly brown iris. The patient presented to emergency for ocular discomfort, and the right globe was subsequently enucleated due to glaucoma and submitted for histopathology. Upon histopathologic evaluation, a uveal schwannoma was diagnosed and confirmed with immunohistochemical staining. Complete metastatic evaluation 1 and 6 months after initial presentation did not reveal evidence of metastasis, and the dog remains systemically healthy...
January 17, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28074638/clinical-management-of-candida-albicans-keratomycosis-in-a-bottlenose-dolphin-tursiops-truncatus
#5
Claire A Simeone, John P Traversi, Jenny M Meegan, Carolina LeBert, Carmen M H Colitz, Eric D Jensen
OBJECTIVE: Corneal ulceration secondary to trauma commonly affects marine mammals, often with opportunistic secondary bacterial or fungal infections. This report characterizes the combined use of auriculopalpebral and ophthalmic nerve blocks, adipose-derived stem cells, and subconjunctival injections for successful treatment of corneal trauma and infection in dolphins. ANIMAL STUDIED: An 11-year-old, female bottlenose dolphin (Tursiops truncatus) presented with bilateral diffuse corneal opacities, which progressed to keratomycosis caused by Candida albicans...
January 11, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28074538/ultrasound-biomicroscopy-and-tonometry-in-ophthalmologically-normal-pigeon-eyes
#6
Sangwan Park, Seonmi Kang, Jaegook Lim, Eunjin Park, Taekjin Nam, Seowoo Jeong, Kangmoon Seo
OBJECTIVE: To evaluate the feasibility of ultrasound biomicroscopy (UBM) and tonometry in pigeons and to provide biometric reference ranges for normal pigeon eyes. ANIMALS STUDIED: Ten pigeons (Columba livia var. domestica) with ophthalmologically normal eyes. PROCEDURES: Ophthalmic examinations, including slit-lamp biomicroscopy and tonometry, were performed to confirm that the eyes were normal. UBM was then performed on the left eye. On each obtained image, the ciliary cleft (CC) length, CC width, and CC area, and iridocorneal angle (ICA) were measured...
January 11, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28074536/use-of-an-intravenous-sclerosing-foam-3-sodium-tetradecyl-sulfate-for-treatment-of-orbital-varix-in-a-dog
#7
Rebecca S Saunders, Brian A Scansen, Stephen S Jung, Hooman Khabiri, David A Wilkie
A 6-month-old intact male Standard Dachshund was referred for evaluation of a soft tissue swelling above the right eye. Examination of the right eye revealed mild lateral deviation of the globe, normal vision, and a dorsonasal soft tissue swelling. Examination of the posterior segment was normal. Dual-phase computed tomography angiography was consistent with an orbital varix of the angularis oculi and right dorsal external ophthalmic veins with no evidence of arterial involvement. Treatment involved fluoroscopically guided coil embolization of the venous outflow with nine platinum microcoils, followed by sclerotherapy of the varix using 1...
January 10, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28070965/the-consequences-of-avian-ocular-trauma-histopathological-evidence-and-implications-of-acute-and-chronic-disease
#8
Bret A Moore, Leandro B C Teixeira, William E Sponsel, Richard R Dubielzig
OBJECTIVE: To present a description and categorization of the histopathological lesions in avian ocular trauma. ANIMAL STUDIED: Seventy-five birds diagnosed with ocular trauma at to the Comparative Ocular Pathology Laboratory of Wisconsin. PROCEDURES: Histological slides were reviewed, and the type of trauma was classified by cause into either (i) blunt trauma or (ii) penetrating trauma and by duration into (i) acute or (ii) chronic. RESULTS: Blunt trauma was the most common source of trauma, and the most frequent lesions were observed in the retina (91%), with 71% of retinas having a tear or detachment and 46% of retinas showing chronic degenerative changes...
January 10, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28058762/vernal-like-conjunctivitis-in-a-western-lowland-gorilla-gorilla-gorilla-gorilla
#9
Jane S Hopper, Ellen Holding, Emma J Scurrell, Heidi Featherstone
CASE DESCRIPTION: A 17-year-old female western lowland gorilla presented with bilateral ocular discharge, conjunctivitis, and rhinitis that was investigated and treated over a 34-month period. Clinical findings, diagnostic results, treatment, and follow-up are described. CLINICAL FINDING: A mild intermittent mucoid ocular discharge was initially noted. 10 months later, conjunctival hyperemia and thickening developed and progressed rapidly to a mass-like lesion covering the right eye...
January 5, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28044393/cataracts-in-the-norwegian-buhund-current-prevalence-and-characteristics
#10
Elin Kristiansen, Tobias Revold, Frode Lingaas, Kristina Narfström, Pia Bjerre Pedersen, Camilla Kielland, Stein Dahl, Ernst-Otto Ropstad
OBJECTIVE: To evaluate prevalence and characteristics of cataracts in the Norwegian Buhund breed 20 years after high reported prevalence of especially pulverulent nuclear cataracts (PNCs). ANIMALS STUDIED: Two hundred and fifty Norwegian Buhund dogs in Norway, Sweden, and Denmark (117 males and 133 females) with previously unknown eye health status were included. Forty-five dogs had multiple examinations (two to six times over a 6-year period). Median age was 4...
January 3, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28008699/intraocular-sarcoma-associated-with-lens-capsule-rupture-and-persistent-hyperplastic-primary-vitreous-in-a-dog
#11
Kathleen L Graham, Mark B Krockenberger, F Mark Billson
This case report describes the clinical findings and ocular pathology in an adult Golden Retriever diagnosed with an intraocular sarcoma. Nineteen s prior to diagnosis with a lens capsule rupture and intraocular sarcoma, the dog was diagnosed with persistent hyperplastic primary vitreous and uveitis based on clinical signs and the ultrasonographic appearance of the eye. Two years after enucleation, there was no evidence of metastatic spread of the sarcoma. The immunohistochemical characteristics of the tumor as well as the limitations and supportive evidence used in attempting to identify the histogenesis of the tumor are outlined...
December 23, 2016: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28008696/sub-tenon-s-injection-in-equine-cadaver-eyes-mri-visualization-of-anesthetic-fluid-distribution-and-comparison-of-two-different-volumes
#12
Silvia Stadler, Matthias Dennler, Udo Hetzel, Francesca Del Chicca, Sèamus Hoey, Bernhard M Spiess, Katrin Voelter, Simon A Pot
OBJECTIVE: To compare the localization and distribution of two different anesthetic fluid volumes around equine cadaver eyes to determine an appropriate volume for a single sub-Tenon's injection in horses. PROCEDURE: A single sub-Tenon's injection of 2% lidocaine was performed in 10 equine cadaver heads (20 eyes) using two different volumes (7 mL on one side and 10 mL on the opposite side). The posterior circular distribution of the anesthetic was quantified in sagittal, dorsal, and transverse MRI (T2W-TSE) sequences and evaluated independently by three board-certified radiologists...
December 23, 2016: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/27981712/corneal-anesthetic-effect-and-ocular-tolerance-of-3-5-lidocaine-gel-in-comparison-with-0-5-aqueous-proparacaine-and-0-5-viscous-tetracaine-in-normal-canines
#13
Francesca Venturi, Tiffany Blocker, Darryl Dustin Dees, Richard Madsen, Julius Brinkis
OBJECTIVE: To compare the degree and duration of corneal anesthesia of a novel viscous ophthalmic lidocaine hydrochloride preparation vs. two commonly used ophthalmic anesthetic preparations. METHODS: Each subject was randomly selected to receive 2 of 4 treatments at 2 different time periods separated by a 1 week washout: 3.5% lidocaine hydrochloride gel (Akten(®) ; Akorn Inc., Lake Forest, Illinois, USA), 0.5% aqueous proparacaine hydrochloride (Akorn Inc.), 0...
December 15, 2016: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/27905668/subconjunctival-antimicrobial-poloxamer-gel-for-treatment-of-corneal-ulceration-in-stranded-california-sea-lions-zalophus-californianus
#14
Claire A Simeone, Carmen M H Colitz, Kathleen M Colegrove, Cara L Field, Carlos Rios, Heather L Chandler, Shawn P Johnson
OBJECTIVE: Corneal ulcers are commonly encountered in pinnipeds. Prolonged oral antibiotics and topical ophthalmic solutions may not be practical to administer, and novel treatment techniques are desired. Thermodynamic gels are a potential solution because they hold antimicrobials at the site of injection, slowly releasing drug. This study investigated the clinical efficacy of antibiotic-impregnated poloxamer gel in management of corneal ulceration. ANIMAL STUDIED: Twenty-six California sea lions undergoing rehabilitation at The Marine Mammal Center...
December 1, 2016: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/27896899/characterization-of-a-novel-form-of-progressive-retinal-atrophy-in-whippet-dogs-a-clinical-electroretinographic-and-breeding-study
#15
André Tavares Somma, Juan Carlos Duque Moreno, Mario Teruo Sato, Blanche Dreher Rodrigues, Marianna Bacellar-Galdino, Laurence Mireille Occelli, Simon Michael Petersen-Jones, Fabiano Montiani-Ferreira
OBJECTIVE: To describe a form of progressive retinal atrophy (PRA) in Whippets including clinical, electroretinographic, optical coherence tomographic changes and pedigree analysis. ANIMALS STUDIED: Client-owned Whippet dogs (n = 51) living in Brazil. PROCEDURES: All animals were submitted for routine ophthalmic screening for presumed inherited ocular disease, which included the following: visual tests, such as obstacle course tests, in scotopic and photopic conditions, cotton ball test, dazzle reflex, ocular fundus evaluation by indirect ophthalmoscopy followed by fundus photography...
November 29, 2016: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/27882744/transpalpebral-exenteration-in-cattle-a-retrospective-study-of-115-cases
#16
Munashe Chigerwe, John A Angelos, Lisa Gamsjäeger, Meera C Heller
OBJECTIVE: To describe the indications for exenteration and complications associated with the procedure. ANIMALS STUDIED: 115 cattle. PROCEDURES: Medical records of cattle presented for unilateral exenteration evaluated at the University of California, Davis Veterinary Medical Teaching Hospital from January 1985 through December 2015 were reviewed. RESULTS: Median (range) age at presentation for all cattle was 6 (0.2-30) years...
November 24, 2016: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/27882675/calibration-of-the-tonovet-and-tono-pen-vet-tonometers-in-the-porcine-eye
#17
Andrew C Lewin, Paul E Miller
OBJECTIVE: The pig has an increasingly important role in ocular drug delivery models, but the most accurate tonometer in this species is unknown. The purpose of this study was to evaluate the accuracy of TonoVet and Tono-Pen Vet tonometers in the ex vivo porcine eye. PROCEDURE: Four freshly enucleated normal porcine eyes were cannulated with two 25-gauge needles; one connected via tubing to a mercury manometer calibrated continuous physiologic recorder and the other connected to a reservoir of lactated Ringer's solution on an adjustable stand...
November 24, 2016: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28044425/immediate-effects-of-diamond-burr-debridement-in-patients-with-spontaneous-chronic-corneal-epithelial-defects-light-and-electron-microscopic-evaluation
#18
Charlotte Dawson, Carolina Naranjo, Belen Sanchez-Maldonado, Georgina V Fricker, Rose N Linn-Pearl, Natalia Escanilla, Christiane Kafarnik, David J Gould, Rick F Sanchez, Marian Matas-Riera
PURPOSE: To evaluate immediate effects of diamond burr debridement (DBD) on the cornea of canine patients diagnosed with spontaneous chronic corneal epithelial defects (SCCEDs). ANIMALS STUDIED: Eight client owned dogs with SCCEDs. METHODS: Nine eyes from eight dogs with SCCEDs underwent superficial keratectomy (SK). The ulcerated area was divided into quadrants with a 300-micron restricted depth knife. Two of four quadrants underwent DBD for 40-60 s...
January 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/26945681/episcleral-cyclosporine-a-implants-for-the-management-of-unilateral-keratoconjunctivitis-sicca-in-an-8-year-old-mare
#19
Catriona J Mackenzie, Harry B Carslake, Matthew Robin, Rebecca J Kent, Fernando Malalana
An 8-year-old mare was presented for investigation of a 1-month history of blepharospasm, eyelid swelling, corneal edema, and ocular discharge of the right eye (OD). Ophthalmic examination confirmed mucopurulent ocular discharge, conjunctival hyperemia, and a dry, dull appearance to the cornea OD. Schirmer tear test results confirmed an absence of tear production OD (0 mm/min) consistent with keratoconjunctivitis sicca. Treatment with topical 0.2% cyclosporine A resulted in an improvement in clinical signs...
January 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/26938883/endogenous-mycotic-endophthalmitis-in-a-dog-with-candiduria-and-evans-syndrome
#20
Andrew Enders, Alexandra van der Woerdt, Taryn Donovan
This report describes the clinical presentation, diagnosis, histologic lesions, and outcome of endogenous mycotic endophthalmitis secondary to candiduria in a three-year-old female spayed Dachshund. The dog was being treated for Evans syndrome for one month prior to being diagnosed with candiduria and fibrinous uveitis OS. The left eye was enucleated due to secondary glaucoma, and the fungal urinary tract infection was treated successfully. Uveitis developed in the contralateral eye with relapse of the urinary tract infection in the following weeks...
January 2017: Veterinary Ophthalmology
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