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Veterinary Ophthalmology

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https://www.readbyqxmd.com/read/28326663/a-morphometric-study-of-the-canine-skull-and-periorbita-and-its-implications-for-regional-ocular-anesthesia
#1
Paulo Roberto Klaumann, Juan Carlos Duque Moreno, Fabiano Montiani-Ferreira
OBJECTIVE: A hypothetical relationship between canine cranial length and the length of the periorbita could be used for intraconal anesthetic volume estimation. STUDY SUBJECTS: Forty-one canine cadaver heads and one macerated dog skull. PROCEDURES: Inion and nasion points were recognized in the macerated skull and used as landmarks for cranial length measure. Thirty cadavers classified as dolichocephalic, mesaticephalic and brachycephalic were distributed in three study groups...
March 22, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28303681/tonometer-validation-and-intraocular-pressure-reference-values-in-the-normal-chinchilla-chinchilla-lanigera
#2
Kevin C Snyder, Andrew C Lewin, Christoph Mans, Gillian J McLellan
OBJECTIVES: To determine accuracy and precision of three commonly used tonometers (TonoVet(®) and TonoLab(®) (ICare Oy, Finland)-rebound tonometers, and Tono-Pen VET™ (Reichert, NY)-applanation tonometer) in normal chinchillas, and to establish a normal intraocular pressure (IOP) reference range in this species. METHODS: The anterior chambers of three chinchilla eyes were cannulated ex vivo and readings obtained at manometric IOPs from 5 to 80 mmHg, using each of the three tonometers in random order...
March 17, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28295997/determination-of-schirmer-tear-test-1-values-in-clinically-normal-alpacas-vicug%C3%A3-a-pacos-in-north-america
#3
Jessica E McDonald, Amy M Knollinger, Darryl D Dees, Nicole E MacLaren
PURPOSE: To determine the normal reference range for Schirmer tear test-1 (STT-1) values in eyes of healthy alpacas (Vicugña pacos). METHODS: Complete ophthalmic examinations were performed on forty healthy alpacas (80 eyes). STT-1 values were obtained in both eyes of all alpacas using a commercial STT strip of a single lot number. Data were analyzed, using a doubly repeated measures ANOVA design, Student's paired t-test, and Pearson correlation test, with P ≤ 0...
March 14, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28294507/exophthalmos-due-to-sterile-neutrophilic-dermatosis-in-a-dog
#4
Emily K Sharpe, Jessica M Meekins, Mary Bagladi-Swanson, Amy J Rankin
An 8-year-old castrated male Bichon Frise was presented to the Kansas State University Veterinary Health Center for evaluation of unilateral right-sided exophthalmos, suspected secondary to a retrobulbar abscess. The dog had acutely developed right-sided periorbital swelling, exophthalmos with pain on retropulsion, as well as multiple cutaneous exudative plaques on the feet and tail base. On ophthalmic examination, the dog also exhibited mild left-sided exophthalmos with decreased, nonpainful retropulsion. Orbital ultrasound and CT were performed to evaluate the extent of bilateral orbital disease...
March 14, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28247535/factors-affecting-peer-reviewed-publication-of-abstracts-presented-at-meetings-of-the-european-college-of-veterinary-ophthalmologists-2008-2012
#5
Ron Ofri, Tali Bdolah-Abram, Nadav Yair
PURPOSE: To review abstracts presented at five consecutive meetings of the European College of Veterinary Ophthalmologists (ECVO), and identify abstract characteristics that affect the probability of their publication in peer-reviewed journals. METHODS: An online search was conducted for peer-reviewed publications (PRPs) stemming from abstracts from five ECVO meetings (2008-2012). Time to publication and journal were noted. Effects of ocular tissue/discipline, species, type of presentation and study, funding acknowledgment and affiliation, professional qualifications, and nationality of the first and last authors on probability of publication were analyzed...
March 1, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28247466/intraocular-pressure-in-american-bullfrogs-rana-catesbeiana-measured-with-rebound-and-applanation-tonometry
#6
Sarah A Cannizzo, Gregory A Lewbart, Hans D Westermeyer
OBJECTIVE: To measure the intraocular pressure (IOP) in normal American Bullfrogs (Rana catesbeiana) with rebound and applanation tonometry and to create calibration curves for both tonometers to determine the actual IOP of bullfrogs. PROCEDURES: Twenty bullfrogs were evaluated with slip-lamp biomicroscopy, indirect ophthalmoscopy, rebound tonometry, and applanation tonometry. Axial globe length and corneal thickness were measured in the three largest and the three smallest frogs with ultrasonography and optical coherence tomography, respectively...
March 1, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28220686/schirmer-tear-test-i-in-dogs-results-comparing-placement-in-the-ventral-vs-dorsal-conjunctival-fornix
#7
Hannah E Visser, Kyle L Tofflemire, Kim R Love-Myers, Rachel A Allbaugh, N Matthew Ellinwood, D Dustin Dees, Gil Ben-Shlomo, R David Whitley
OBJECTIVE: To compare Schirmer tear test I (STT I) values obtained from placement of tear strips in the ventral and dorsal conjunctival fornices in dogs. PROCEDURE: Schirmer tear test I was performed on each eye of 16 clinically normal dogs (32 eyes) in a crossover study. Initial tear strip placement site was randomized for each eye. Alternative placement site measurements were obtained after 1 week. RESULTS: The mean (± standard deviation, SD) STT I for dorsal and ventral conjunctival fornices was 20...
February 20, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28181368/diamond-burr-debridement-vs-grid-keratotomy-in-canine-scced-with-scanning-electron-microscopy-diamond-burr-tip-analysis
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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/28249363/letter-to-the-editor
#18
LETTER
Michael E Paulsen, Barbara Braus, Heidi Featherstone, Christine Heinrich, Peter Renwick, Michael Rhodes
No abstract text is available yet for this article.
March 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/27167494/bioavailability-and-biochemical-effects-of-diclofenac-sodium-0-1-ophthalmic-solution-in-the-domestic-chicken-gallus-gallus-domesticus
#19
Angela N Griggs, Taylor J Yaw, Joseph S Haynes, Gil Ben-Shlomo, Kyle L Tofflemire, Rachel A Allbaugh
OBJECTIVE: To determine if topical ophthalmic diclofenac sodium 0.1% solution alters renal parameters in the domestic chicken, and to determine if the drug is detectable in plasma after topical ophthalmic administration. ANIMALS: Thirty healthy domestic chickens. PROCEDURES: Over 7 days, six birds were treated unilaterally with one drop of artificial tear solution (group 1), 12 birds were treated unilaterally (group 2) and 12 bilaterally (group 3) with diclofenac sodium 0...
March 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/27167349/the-combined-use-of-surgical-debulking-and-diode-laser-photocoagulation-for-limbal-melanoma-treatment-a-retrospective-study-of-21-dogs
#20
Valentina Andreani, Adolfo Guandalini, Nunzio D'Anna, Chiara Giudice, Roberta Corvi, Nicola Di Girolamo, John S Sapienza
OBJECTIVE: To evaluate effectiveness and safety of debulking and diode laser photocoagulation (DPC) for the treatment of limbal melanoma (LM). PROCEDURE: Retrospective multi-institutional case series. Medical records of animals diagnosed with LM at the Centro Veterinario Specialistico (CVS) and at the Long Island Veterinary Specialists from 1994 to 2014 were retrieved. Signalment, location, extent of tumors, recurrence rate, and early and late complications were reported...
March 2017: Veterinary Ophthalmology
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