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Veterinary Ophthalmology

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https://www.readbyqxmd.com/read/30365226/superficial-keratectomy-as-a-treatment-for-non-healing-corneal-ulceration-associated-with-primary-corneal-endothelial-degeneration
#1
Kellam D Bayley, R A Read, M Carolyn Gates
OBJECTIVE: To analyze a study population of dogs with primary corneal endothelial degeneration (PCED) for information on the patterns of disease and to report the efficacy of superficial keratectomy (SK) for resolution of non-healing corneal ulcers associated with PCED. ANIMALS STUDIED: Primary corneal endothelial degeneration was diagnosed in 238 dogs between 1998 and 2017. Corneal ulceration associated with PCED was present in 89 dogs (109 eyes), of which 47 eyes were treated with SK...
October 26, 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/30358935/preliminary-findings-in-30-dogs-treated-with-micropulse-transscleral-cyclophotocoagulation-for-refractory-glaucoma
#2
John S Sapienza, Kay Kim, Elena Rodriguez, Nicola DiGirolamo
OBJECTIVE: The purpose of this study was to report the preliminary results of a novel micropulse transscleral diode laser cyclophotocoagulation (MP-TSCP) as primary therapy for glaucomatous dogs. ANIMAL STUDIED: Client owned dogs undergoing MP-TSCP therapy at a veterinary referral center. PROCEDURE: Retrospective study of dogs with glaucoma that were treated with MP-TSCP with a minimum of 1 month (range: 1-18 months) of follow-up. Reported outcomes were intraocular pressure (IOP), treatment parameters, reduction in medications, complications, and incidence of repeat therapy...
October 25, 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/30289194/migration-of-retrobulbar-wooden-foreign-body-between-diagnostic-imaging-and-surgical-extraction-in-a-german-shepherd-dog
#3
Rose L Cherry, Kryssa L Johnson, Adrien-Maxence Hespel, Karen M Tobias, Daniel A Ward
A 2-year-old, male castrated German shepherd dog was presented to the University of Tennessee Veterinary Medical Center (UTVMC) with periorbital swelling and conjunctival mucopurulent discharge 2 days following removal of a twig from the medial canthus by the owner. Diagnostic imaging was pursued due to the suspicion of a retrobulbar foreign body (FB). A cylindrical FB approximately 3.0 cm in length and 1.0 cm in diameter with concentric rings, suspected to be wooden material, was identified on computed tomography (CT) imaging...
October 5, 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/30288908/tear-glucose-creatinine-and-urea-nitrogen-concentrations-in-cats-with-normal-or-increased-plasma-concentrations
#4
Andrea Steinmetz, Ulrike Jörn, Gerhard U Oechtering, Romy M Heilmann
OBJECTIVE: The aim of the study was to determine the lacrimal fluid (LF) contents of glucose, urea nitrogen, and creatinine in cats. ANIMAL STUDIED: A total of 96 cats were included in the study. PROCEDURE: Venous blood and LF samples were collected. For LF sampling, three small polyurethane sponges were placed in the ventral fornix of both eyes. Both LF and plasma concentrations of glucose, urea nitrogen, and creatinine were quantitatively analyzed and compared...
October 5, 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/30288880/ocular-abnormalities-in-a-herd-of-old-kladruber-horses-a-cross-sectional-study
#5
Radka Andrysikova, Simon Pot, Simon Rüegg, Jitka Markova, Eliska Horackova, Filip Kolos, Katrin Voelter, Bernhard Spiess
OBJECTIVE: To screen a closed herd of the Old Kladruber Horses (OKH) for the prevalence of ocular disorders and report normal ocular variations. ANIMALS STUDIED: Two hundred and sixty-one horses, 122 Old Kladruber Gray Horses, and 139 Old Kladruber Black Horses owned by the National Stud Farm Kladruby nad Labem, Czech Republic, were included in the study with signalment and pedigree information recorded. PROCEDURES: Bilateral ocular examination of manually restrained horses was performed in a darkened environment by a single examiner (RA), using a portable slit-lamp biomicroscope, direct ophthalmoscope, and monocular indirect ophthalmoscopy using a Finnoff transilluminator and 20 D condensing lens...
October 5, 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/30238589/limbal-squamous-cell-carcinoma-in-a-rocky-mountain-horse-case-report-and-investigation-of-genetic-contribution
#6
Kelly E Knickelbein, Mary E Lassaline, Rebecca R Bellone
OBJECTIVE: To document a case of limbal squamous cell carcinoma (SCC) in a Rocky Mountain Horse stallion determined to be homozygous for the genetic risk factor (DDB2 c.1013C>T) strongly associated with the disease in Haflinger and Belgian horses, and to determine the frequency of this allele in a larger population of Rocky Mountain Horses. ANIMALS STUDIED: One privately owned Rocky Mountain Horse and 84 Rocky Mountain Horses screened for allelic frequency. PROCEDURES: A complete ophthalmic examination was performed on a Rocky Mountain Horse stallion for assessment of a mass affecting the right eye...
September 20, 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/30211481/age-associated-changes-in-the-equine-flash-visual-evoked-potential
#7
Lena Ström, Måns Michanek, Björn Ekesten
OBJECTIVE: To investigate age-associated changes of flash visual evoked potentials (FVEPs) in sedated horses. ANIMAL STUDIED: Twenty-eight clinically healthy Standardbred Warmblooded trotters, aged 36 hours to 28 years. PROCEDURES: Light-adapted FVEPs and FERGs were recorded (An-vision RETIport, Roland-consult, Germany) in response to flash stimuli. Sedation was obtained using alpha-2-agonists intravenously. Akinesia of the eyelids was induced and pupils were dilated...
September 13, 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/30211477/punctal-stenosis-in-6-dogs-following-the-long-term-use-of-topical-neomycin-polymyxin-b-dexamethasone
#8
Katelin Quantz, Jean Stiles
Six dogs were diagnosed with punctal stenosis following the long-term use of topical neomycin-polymyxin B-dexamethasone (NPD). All patients were initially presented for ophthalmic diseases requiring ongoing anti-inflammatory therapy. Five of the 6 dogs had previously or concurrently been treated with topical anti-inflammatory medications other than NPD. One patient exclusively received topical NPD prior to the diagnosis of punctal stenosis. The onset of punctal stenosis following therapy with NPD was variable among patients, ranging from 4 months to over 1 year...
September 13, 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/30211474/a-bidirectional-corneoconjunctival-transposition-for-the-treatment-of-feline-corneal-sequestrum
#9
Vanessa Y Yang, Amber L Labelle, Carrie B Breaux
A case is presented of a 1-year-old Persian cat with a corneal sequestrum treated with a bidirectional corneoconjunctival transposition. The size of this lesion precluded use of a traditional corneoconjunctival transposition. At the time of writing, the patient maintained a clear visual axis with minimal scarring and no recurrence 6 months post-operatively. This report describes a novel surgical technique used to successfully treat a large feline corneal sequestrum.
September 13, 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/30193404/effect-of-topical-application-of-0-5-proparacaine-on-corneal-culture-results-from-33-dogs-12-cats-and-19-horses-with-spontaneously-arising-ulcerative-keratitis
#10
Sydney G Edwards, David J Maggs, Barbara A Byrne, Philip H Kass, Mary E Lassaline
OBJECTIVE: To investigate the effect of topically applied proparacaine on bacterial and fungal culture results and to compare cytologic and culture results in patients with ulcerative keratitis. PROCEDURE: Corneal samples were collected from 33 dogs, 19 horses, and 12 cats with spontaneously arising ulcerative keratitis. Samples for bacterial (dogs, cats, horses) and fungal (horses) cultures were collected prior to and following application of 0.5% proparacaine or saline...
September 7, 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29493862/multiple-ocular-developmental-defects-in-four-closely-related-alpacas
#11
Kelly E Knickelbein, David J Maggs, Christopher M Reilly, Kathryn L Good, Juliet R Gionfriddo
OBJECTIVE: To describe the clinical, gross pathologic, and histopathologic findings for a visually impaired 5.8-year-old female alpaca with multiple ocular abnormalities, as well as the clinical findings for three closely related alpacas. ANIMALS STUDIED: Four alpacas. PROCEDURES: Ophthalmic examination was performed on a 16-month-old female alpaca following observation of visual impairment while hospitalized for an unrelated illness. Following acute systemic decline and death 4...
September 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29411497/the-effects-of-two-different-types-of-bandage-contact-lenses-on-the-healthy-canine-eye
#12
COMPARATIVE STUDY
Barbara Katharina Braus, Daniela Riedler, Alexander Tichy, Joachim Spergser, Ilse Schwendenwein
OBJECTIVE: To compare two types of bandage contact lenses on the healthy canine eye. ANIMALS STUDIED: Six healthy Beagles. PROCEDURES: Two different types of bandage contact lenses (single sized human silicone contact lens 'PureVision 2' (Bausch & Lomb Incorporated, Rochester, NY, USA) and specially designed veterinary hydrogel contact lens 'AcriVet Pat D' (Bausch & Lomb Incorporated) were placed in 12 eyes of healthy Beagle dogs. Retention times and the effects of the lenses regarding irritation of the eye, changes in tear production, impact of contact lenses on tonometric readings, and cytologic and microbiological alterations of the canine eye were investigated...
September 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29383822/comparison-of-diode-laser-trans-scleral-cyclophotocoagulation-versus-implantation-of-a-350-mm-2-baerveldt-glaucoma-drainage-device-for-the-treatment-of-glaucoma-in-dogs-a-retrospective-study-2010-2016
#13
COMPARATIVE STUDY
Kathleen L Graham, Evelyn J S Hall, Charles Caraguel, Andrew White, Francis A Billson, F Mark Billson
OBJECTIVE: To compare outcomes following trans-scleral cyclophotocoagulation (TSCP) and 350-mm2 Baerveldt implantation in the treatment of canine refractory glaucoma. DESIGN: Retrospective case study. CASE SELECTION: Client owned dogs undergoing surgical treatment of glaucoma within a veterinary referral hospital. PROCEDURES: Eighty-six glaucoma surgeries were performed on 83 eyes (69 dogs) diagnosed with primary or secondary glaucoma...
September 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29380518/ocular-anatomy-of-the-black-pacu-colossoma-macropomum-gross-histologic-and-diagnostic-imaging
#14
Kate A Gustavsen, Joanne R Paul-Murphy, Ernest Scott Weber, Allison L Zwingenberger, Freeland H Dunker, Richard R Dubielzig, Christopher M Reilly, Christopher J Murphy
OBJECTIVE: To describe the ocular anatomy of the black pacu (Colossoma macropomum), a freshwater teleost fish of the Amazon River basin, including an unusual choroid laden with adipose tissue. PROCEDURES: Three adult black pacu were anesthetized and examined clinically and with ocular ultrasonography, then euthanized. Three fish were euthanized and their heads imaged immediately postmortem using computed tomography. One fish was euthanized and its exenterated eyes imaged by high-resolution magnetic resonance imaging...
September 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29350477/pharmacokinetic-evaluation-and-safety-of-topical-1-morphine-sulfate-application-on-the-healthy-equine-eye
#15
Emma Gordon, Bernadette V Stang, Jerry Heidel, Keith P Poulsen, Christopher K Cebra, John W Schlipf
OBJECTIVE: To determine if corneal epithelial cell integrity is detrimentally affected by short-term administration of 1.0% morphine sulfate. Additionally, we sought to determine if topical 1.0% morphine applied to the equine cornea would result in ocular or systemic absorption. ANIMAL STUDIED: Six healthy horses. PROCEDURE: Morphine sulfate (1.0%) was applied topically to one eye every four hours for 72 h before horses were euthanized. Serum samples were collected at varying time points during the study and aqueous and vitreous humor were collected immediately after euthanasia...
September 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29350447/effect-of-sedation-with-butorphanol-on-variables-pertaining-to-the-ophthalmic-examination-in-dogs
#16
RANDOMIZED CONTROLLED TRIAL
Jean-Yves Douet, Alain Regnier, Agnès Dongay, Sophie Jugant, Géraldine Jourdan, Didier Concordet
OBJECTIVE: To evaluate whether sedation with intramuscular butorphanol can interfere with different variables of the ocular examination in dogs. ANIMALS: Twenty-two beagles without ophthalmic abnormalities. PROCEDURES: Each dog was examined 20 min prior to and again just before administration of butorphanol to establish baseline data. The globe and nictitating membrane position was evaluated, and the following were recorded: menace response, dazzle reflex, corneal blink reflex, phenol red thread tear test (PRT), Schirmer tear test-1 (STT-1), pupil size (PS) measurement, and rebound tonometry...
September 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29284193/epidemiology-of-ocular-disorders-presumed-to-be-inherited-in-three-small-italian-dog-breeds-in-italy
#17
Adolfo Guandalini, Nicola Di Girolamo, Roberta Corvi, Daniele Santillo, Valentina Andreani, Barbara Pinzo
OBJECTIVE: To describe the prevalence and the types of eye disorders that are known or presumed to be inherited (KP-HED) in three small Italian dog breeds. ANIMALS: Three small Italian dog breeds: Maltese, Bolognese, and Italian Greyhound. PROCEDURES: All dogs of the breeds selected for this prospective observational study that underwent a complete ophthalmic examination between 1994 and 2015 were included. General and proportional KP-HED prevalence with 95% confidence intervals were reported...
September 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29251408/odontogenic-parakeratinized-cyst-resulting-in-exophthalmos-and-palatine-maxillary-and-zygomatic-bone-erosion-in-a-dog
#18
Vanessa L Holly, Lesley A Zwicker, Gregory Starrak, Marina L Leis, Bianca S Bauer, Stephanie Osinchuk, Lynne S Sandmeyer, Bruce H Grahn
A novel case of a canine odontogenic parakeratinized cyst (COPC) that resulted in exophthalmos and palatine, maxillary, and zygomatic bone erosion in a 5-year-old Chihuahua dog is reported. Final diagnosis was aided by cross-sectional imaging (magnetic resonance imaging and computed tomography) and confirmed with histologic examination of the cyst wall.
September 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29251400/ophthalmic-examination-findings-and-intraocular-pressures-in-wild-caught-african-giant-pouched-rats-cricetomys-spp
#19
Amanda R Heller, Eric C Ledbetter, Bhupinder Singh, Danielle N Lee, Alexander G Ophir
PURPOSE: To report ophthalmic examination findings and intraocular pressures (IOPs) in wild-caught African giant pouched rats (Cricetomys ansorgei and gambianus) from Tanzania and Ghana. PROCEDURES: After being placed under general anesthesia for examination, slit-lamp biomicroscopy before and after pharmacologic mydriasis and indirect ophthalmoscopy was performed. Eyes were fluorescein stained and IOPs measured by rebound tonometry using the TonoVet® . RESULTS: Thirty-two sexually mature pouched rats (64 eyes) were examined, including 16 males and 16 females...
September 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29251394/optic-neuritis-in-dogs-96-cases-1983-2016
#20
Sara M Smith, Hans D Westermeyer, Christopher L Mariani, Brian C Gilger, Michael G Davidson
OBJECTIVE: To characterize ocular and neurologic findings, causes, and treatment outcomes of dogs with optic neuritis. PROCEDURE: Medical records from dogs with a diagnosis of optic neuritis at North Carolina State University, College of Veterinary Medicine, Veterinary Hospital between 1983 and 2016 were reviewed. RESULTS: Ninety-six cases (20 unilateral, 76 bilateral), comprised of 38 males and 58 females with a mean age of 6.1 ± 3.0 years (range 0...
September 2018: Veterinary Ophthalmology
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