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Veterinary Ophthalmology

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https://www.readbyqxmd.com/read/29762893/retrobulbar-vs-peribulbar-regional-anesthesia-techniques-using-bupivacaine-in-dogs
#1
Yael Shilo-Benjamini, Peter J Pascoe, David J Maggs, Steven R Hollingsworth, Ann R Strom, Kathryn L Good, Sara M Thomasy, Philip H Kass, Erik R Wisner
OBJECTIVE: To compare the effectiveness of retrobulbar anesthesia (RBA) and peribulbar anesthesia (PBA) in dogs. ANIMAL STUDIED: Six adult mixed-breed dogs (18-24 kg). PROCEDURES: In a randomized, masked, crossover trial with a 10-day washout period, each dog was sedated with intravenously administered dexmedetomidine and administered 0.5% bupivacaine:iopamidol (4:1) as RBA (2 mL via a ventrolateral site) or PBA (5 mL divided equally between ventrolateral and dorsomedial sites)...
May 15, 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29762889/endothelial-cell-density-and-characterization-of-corneal-endothelial-cells-in-the-tawny-owl-strix-aluco-using-specular-microscopy
#2
Natàlia Coyo, Marta Leiva, Daniel Costa, Rafael Molina, Olga Nicolás, Jose Ríos, Maria Teresa Peña
OBJECTIVE: To determine endothelial cell density (ECD) and morphology and morphometry of corneal endothelial cells in the tawny owl (Strix aluco), as well as to report the effects of aging on these parameters. ANIMAL STUDY AND PROCEDURES: Twenty tawny owls were included in the study and classified into 2 groups according to their age: fledglings (<1 year old) and adults (>1 year old). Central corneal endothelium was studied by means of noncontact specular microscopy (Specular Microscope SP-2000P; Topcon, Tokyo, Japan), and results for ECD (cells/mm2 ), mean cell area ((MCA (μm2 )), polymegathism (CV), and pleomorphism (% hexagonal cells) were obtained...
May 15, 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29749697/canine-and-feline-fundus-photography-and-videography-using-a-nonpatented-3d-printed-lens-adapter-for-a-smartphone
#3
Filipe Espinheira Gomes, Eric Ledbetter
OBJECTIVE: To describe an indirect funduscopy imaging technique for dogs and cats using low cost and widely available equipment: a smartphone, a three-dimensional (3D) printed indirect lens adapter, and a 40 diopters (D) indirect ophthalmoscopy lens. METHODS: Fundus videography was performed in dogs and cats using a 40D indirect ophthalmoscopy lens and a smartphone fitted with a 3D printed indirect lens adapter. All animals were pharmacologically dilated with topical tropicamide 1% solution...
May 11, 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29722121/in-vivo-confocal-microscopy-characteristics-of-equine-epithelial-and-subepithelial-nonulcerative-keratomycosis
#4
Eric C Ledbetter, Nita L Irby, Leandro B C Teixeira
OBJECTIVE: To describe the in vivo confocal microscopy features of horses with epithelial and subepithelial nonulcerative keratomycosis. ANIMALS STUDIED: Four horses with a clinical diagnosis of epithelial or subepithelial keratomycosis. PROCEDURES: Horses were examined on one or more occasions by in vivo laser scanning confocal microscopy of the cornea. Confocal microscopic examination characteristics were correlated with clinical, cytological, and histopathological findings for the horses...
May 2, 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29701286/physiological-characterization-of-ocular-melanosis-affected-canine-melanocytes
#5
Ethan M Dawson-Baglien, Erica L Noland, Dodd G Sledge, Matti Kiupel, Simon M Petersen-Jones
OBJECTIVE: Cairn terriers with ocular melanosis (OM) accumulate large, heavily pigmented melanocytes in the anterior uvea. Darkly pigmented plaques develop within the sclera, leading us to hypothesize that OM uveal melanocytes may have an abnormal migratory capacity. ANIMALS STUDIED: Globes from OM-affected Cairn terriers and unaffected control eyes enucleated for reasons unrelated to this study were used for immunohistochemistry and to culture melanocytes for in vitro cell behavior assays...
April 27, 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29689619/canine-feline-and-equine-corneal-vascular-neoplasia-a-retrospective-study-2007-2015
#6
Alba Maria M Shank, Leandro B C Teixeria, Richard R Dubielzig
Corneal vascular neoplasms (hemangioma and hemangiosarcoma) are rare in all species. Reported cases are single case reports in a single species. Archived cases of corneal hemangioma and hemangiosarcoma from dogs, cats, and horses were obtained from the Comparative Ocular Pathology Lab of Wisconsin (COPLOW, Madison, WI), tabulated, and examined. This retrospective study describes the breeds, ages, tumor types, and characteristics of vascular neoplasms that appeared to be primarily corneal in location, in feline, canine, and equine patients, with gross and histologic images...
April 24, 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29687947/comparison-of-3-corneal-cytology-collection-methods-for-evaluating-equine-ulcerative-keratitis-cytobrush-kimura-platinum-spatula-and-handle-edge-of-scalpel-blade
#7
Laura Proietto, Sarah S Beatty, Caryn E Plummer
PURPOSE: To compare corneal cytology samples from three common sampling techniques: cytobrush (CB), Kimura platinum spatula (KS), and the handle edge of a scalpel blade (SB). METHODS: Equine patients presenting to the University of Florida College of Veterinary Medicine with ulcerative keratitis were included. Following diagnosis of corneal ulcer and sampling for microbial culture, two cytology samples per technique were collected with sterile CB, KS, and SB in a randomized order...
April 24, 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29667738/visual-outcome-in-cats-with-hypertensive-chorioretinopathy
#8
Whitney M Young, Chaowen Zheng, Michael G Davidson, Hans D Westermeyer
PURPOSE: To investigate factors associated with long-term visual outcome in cats with hypertensive chorioretinopathy. ANIMALS STUDIED: Eighty-eight client-owned cats diagnosed with hypertensive chorioretinopathy. PROCEDURE: Medical records from cats with systemic hypertension and associated retinal lesions were reviewed. RESULTS: Most cats (61%) were blind in both eyes at presentation. Presence of menace response at last follow-up evaluation was positively correlated with presence of menace response at presentation (P = ...
April 18, 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29656563/factors-affecting-publication-in-peer-reviewed-journals-of-abstracts-presented-from-2008-to-2012-acvo-meetings
#9
Ellison Bentley, Megan Koester, Tali Bdolah-Abram, Nadav Yair, Ron Ofri
PURPOSE: To examine variables that affect publication of ACVO meeting abstracts in peer-reviewed journals and compare results to ECVO publication rate (PR). METHODS: Published papers were identified via online searches for abstracts from 2008 to 2012 ACVO/ECVO meetings. Variables analyzed (via Pearson's chi-Squared test) included the following: oral presentation/poster, type of abstract (clinical/basic science/case report), species, ocular tissue, nationality, funding, first/last/any author a diplomate, resident as first author, and author affiliation (private practice/university)...
April 14, 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29656541/a-novel-herpesvirus-associated-with-chronic-superficial-keratitis-and-proliferative-conjunctivitis-in-a-great-horned-owl-bubo-virginianus
#10
Molly D Gleeson, Bret A Moore, Sydney G Edwards, Sarah Stevens, April L Childress, James F X Wellehan, Jessica Robertson, Christopher J Murphy, Michelle G Hawkins, Joanne Paul-Murphy
An adult great-horned owl (Bubo virginianus; GHOW) presented with a history of recurrent corneal ulceration of the right eye (OD). Findings included ulcerative superficial keratitis, proliferative conjunctivitis, and iris pigmentary changes. The ulcer was initially nonresponsive to medical therapy, but showed rapid and appropriate healing following diamond burr debridement. Proliferative conjunctivitis markedly improved following topical antiviral therapy with cidofovir 1%, interferon alpha 2B ophthalmic solutions, and oral l-lysine...
April 14, 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29536611/treatment-of-spontaneous-chronic-corneal-epithelial-defects-scceds-with-diamond-burr-debridement-vs-combination-diamond-burr-debridement-and-superficial-grid-keratotomy
#11
Doris Wu, Sara M Smith, Jessica M Stine, Tammy M Michau, Thomas R Miller, Samantha L Pederson, Kate S Freeman
OBJECTIVE: To evaluate the efficacy of diamond burr debridement (DBD) vs a combination of diamond burr debridement with superficial grid keratotomy (DBD+SGK) for the treatment of spontaneous chronic corneal epithelial defects (SCCEDs) in dogs. PROCEDURE: Medical records of dogs diagnosed with SCCEDs from three different institutions that received a DBD or DBD+SGK between 2003 and 2015 were reviewed. Age, breed, sex, history of a previous SCCED, procedures performed, time to healing, and complications were statistically analyzed...
March 14, 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29532988/h%C3%A3-bner-s-eyelid-reconstruction-using-a-free-tarsomarginal-autograft-in-eight-dogs-a-retrospective-study
#12
Anne-Sophie Poinsard, Iona Mathieson, Olivier Balland
OBJECTIVE: The aim of our work was to study the potential of tarsomarginal grafting technique, in canine. ANIMAL STUDIED: All dogs included in this study had tumors of the upper or lower eyelid. Furthermore, resection of the tumor necessitated excision of the eyelid margin comprising 1/4 and 2/3. PROCEDURE: Harvesting of the graft with the length of half the length of the tumor, including its free margins was performed via a full-thickness incision on the ipsilateral healthy eyelid...
March 13, 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29521438/contrast-enhanced-ultrasonography-for-evaluation-of-blood-perfusion-in-normal-canine-eyes
#13
Sunghwa Hong, Seungjo Park, Dahae Lee, Ahyoung Cha, Dongeun Kim, Jihye Choi
OBJECTIVE: This study was performed to evaluate ocular structures using contrast-enhanced ultrasonography (CEUS) in dogs to assess the feasibility of CEUS for investigating the blood perfusion of canine eyes. ANIMAL STUDIED: Eight purpose-bred beagles were used. PROCEDURES: Blood perfusion and vascularity of the right eye were evaluated using color Doppler, power Doppler, and CEUS with Sonazoid® . Vascular changes were quantitatively evaluated by measuring peak intensity, time to initial upslope, and time to peak from the ciliary body, iris, choroid, retina, and the retrobulbar region by CEUS...
March 9, 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29520917/the-use-of-hyaluronic-acid-subdermal-filler-for-entropion-in-canines-and-felines-40-cases
#14
Jessica E McDonald, Amy M Knollinger
PURPOSE: To evaluate the use of hyaluronic acid (HA) subdermal filler in canines and felines for entropion. METHODS: Complete ophthalmologic examination was performed by a board-certified veterinary ophthalmologist or ABVO-approved resident. Each case was characterized as primary, secondary, spastic or cicatricial entropion. HA subdermal filler, specifically Restylane® and Restylane Silk® , were utilized in dogs and cats, respectively. Subdermal injection was performed 1-2 mm from the eyelid margin in the affected area until normal eyelid conformation was achieved...
March 9, 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29517855/immunohistochemical-characterization-of-feline-lymphoplasmacytic-anterior-uveitis
#15
Lawrence Crossfield, Luca Fortuna, Rebekah Carling, Emma Scurrell, Marian Matas Riera, Yu-Mei Chang, Charlotte Dawson, Rachael Pittaway, Ian Yl Yeung, Caroline Thaung, Simon L Priestnall, Oliver A Garden
OBJECTIVE: To characterize the immune cells present in different forms of feline anterior uveitis. SAMPLES: Eyes were obtained from 49 cats diagnosed with chronic idiopathic lymphoplasmacytic anterior uveitis, 7 cats with feline infectious peritonitis (FIP), and 9 cats euthanized for nonocular disease. METHODS: H&E sections were scored on the level of infiltrate in the anterior uvea. Immunohistochemistry was performed for FoxP3, CD3, and IL-17A, and positive cells were quantified in multiple images of each sample...
March 8, 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29517162/intraocular-pressure-reference-intervals-in-eyes-of-clinically-normal-miniature-donkeys-equus-africanus-asinus
#16
Carla D Hibbs, Paul M Barrett, D Dustin Dees
PURPOSE: To determine intraocular pressure (IOP) reference intervals in eyes of healthy miniature donkeys (Equus africanus asinus) via rebound and applanation tonometry. METHODS: Complete ophthalmic and physical examinations were performed by board-certified veterinary ophthalmologists. Inclusion criteria for animals participating in this study were dictated by the American Society for Veterinary Clinical Pathology (ASVCP) reference interval guidelines. Intraocular pressure estimates (TonoVet® and TonoPen XL® ) were obtained in both eyes...
March 8, 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29517158/bilateral-retinoschisis-in-a-dog-a-veterinary-clinical-application-for-optical-coherence-tomography
#17
Elizabeth A F Schaefer, Rebecca E H Whiting, Jacqueline W Pearce, Bruce H Grahn, Charles W Hamm, Cecil P Moore, Kristina L Narfström
A 11-year-old neutered male Labrador retriever-cross dog was presented to the University of Missouri-Columbia Veterinary Ophthalmology Service for subtle visual deficits. Indirect ophthalmoscopy revealed a smooth, bullous elevation in the superior-temporal retina OU. Optical coherence tomography (OCT) performed OU showed inner retinal separation consistent with retinoschisis. Electroretinography (ERG) revealed markedly reduced b-wave amplitudes in the more severely affected eye (OD) compared with the less severely affected eye (OS)...
March 8, 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29517148/traumatic-phacocele-in-an-american-miniature-horse
#18
Kelly E Knickelbein, Mallory Stock, Sebastian E Carrasco, Christopher M Reilly, Mary E Lassaline
An 18-year-old American Miniature Horse mare was presented with a complaint of a scleral swelling affecting the right eye and a history of suspected trauma 6 weeks prior to evaluation. Clinical findings included severe blepharospasm, a bulbous swelling of the dorsotemporal bulbar conjunctiva, and phthisis bulbi. Ocular ultrasound was recommended but declined. Enucleation was elected for the blind, painful eye and was performed standing. Gross and histopathologic examinations of the globe were consistent with extrusion of the lens to the episcleral space, which is classified as a traumatic phacocele when associated with naturally occurring trauma...
March 8, 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29517120/relationship-between-corneal-sensitivity-corneal-thickness-corneal-diameter-and-intraocular-pressure-in-normal-cats-and-cats-with-congenital-glaucoma
#19
Mary R Telle, Nickolas Chen, Daniel Shinsako, Julie A Kiland, Kazuya Oikawa, Ralph Møller Trane, Gillian J McLellan
OBJECTIVE: To determine the effect of feline congenital glaucoma (FCG) on corneal sensitivity, and relationships between corneal sensitivity, central corneal thickness (CT), and corneal diameter (CD). ANIMALS AND PROCEDURES: Corneal sensitivity (estimated by corneal touch threshold [CTT] using Cochet-Bonnet esthesiometry); CT using ultrasonic pachymetry; intraocular pressure (IOP) using rebound tonometry; and maximal horizontal CD were measured in 16 normal and 14 FCG cats, both males and females, aged 7 months-3...
March 8, 2018: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29508528/epidemiology-and-clinical-presentation-of-feline-cataracts-in-france-a-retrospective-study-of-268-cases
#20
Alexandre Guyonnet, Elise Donzel, Aurélie Bourguet, Sabine Chahory
OBJECTIVE: To describe the epidemiology and the clinical presentation of cataracts in a population of cats in France. PROCEDURES: A review of medical records of cats presented to the Ophthalmology Unit of the National Veterinary School of Alfort between January 2010 and June 2017 was carried out to identify cats affected by cataracts. The signalment of affected cats, medical history, etiology of cataract, age of onset, stage of development, location of opacities, and concurrent ocular lesions were evaluated...
March 6, 2018: Veterinary Ophthalmology
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