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Veterinary Ophthalmology

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https://read.qxmd.com/read/30735310/cryopreservation-20%C3%A2-c-of-equine-corneoscleral-tissue-microbiological-histological-and-ultrastructural-study
#1
Daniel Costa, Marta Leiva, Carolina Naranjo, José Ríos, Maria Teresa Peña
OBJECTIVE: To evaluate microbiological, histological, and ultrastructural characteristics of short-term cryopreserved (STC) equine corneoscleral tissue (<1 year), and to compare it with long-term cryopreserved (LTC) tissue (>7 years). ANIMALS STUDIED: Thirty-four healthy equine globes. PROCEDURE: After a decontamination protocol, globes were enucleated and stored at -20°C in broad-spectrum antibiotics. Corneoscleral tissue was evaluated at different storage periods: 1 month-1 year (20 eyes) and 7-9 years (12 eyes)...
February 8, 2019: Veterinary Ophthalmology
https://read.qxmd.com/read/30724460/bilateral-enucleation-in-dogs-a-review-of-owner-perceptions-and-satisfaction
#2
Negar Hamzianpour, Kinley Smith, Charlotte Dawson, Michael Rhodes
PURPOSE: To evaluate owner perceptions of the quality of life of their dogs before and after bilateral enucleation and to assess owner satisfaction with the procedure. METHODS: Medical records of 72 dogs from the Willows Veterinary Centre and Referral Service (49 dogs) and the Royal Veterinary College (RVC, 23 dogs) that had undergone bilateral enucleation, either in one procedure or at different times, between April 2008 (Willows) or 2012 (RVC) and April 2017, were reviewed...
February 6, 2019: Veterinary Ophthalmology
https://read.qxmd.com/read/30724454/long-term-outcome-of-phacoemulsification-in-raptors-a-retrospective-study-1999-2014
#3
Alex B Sigmund, Michael P Jones, Daniel A Ward, Diane V H Hendrix
OBJECTIVE: To determine long-term outcome of phacoemulsification in raptors at the University of Tennessee Veterinary Medical Center. ANIMALS STUDIED: Seven nonreleasable diurnal raptors including, four bald eagles (Haliaeetus leucocephalus), two red-tailed hawks (Buteo jamaicensis), and one peregrine falcon (Falco peregrinus) that had undergone phacoemulsification. All birds showed behavioral changes attributable to visual deficits prior to surgery. PROCEDURES: All birds underwent phacoemulsification for cataracts...
February 6, 2019: Veterinary Ophthalmology
https://read.qxmd.com/read/30724453/clinical-and-pathological-findings-in-three-dogs-with-a-corneocentric-presentation-of-nodular-granulomatous-episcleritis
#4
Negar Hamzianpour, Christine Heinrich, R Gareth Jones, Peter McElroy, Neil Wilson, Emma Scurrell
PURPOSE: To describe the clinical signs, management, histopathologic findings, and outcome of three dogs with a corneocentric presentation of nodular granulomatous episcleritis (NGE). METHODS: Three dogs of varying breeds were presented for a unilateral, nonpainful, and infiltrative corneal lesion in the dorsal aspect of the eye. Clinical response to symptomatic topical treatment directed at a presumed inflammatory or immune-mediated cause was poor. Due to this, and concerns of neoplasia, ultrasonography (n = 1), incisional biopsy (n = 2), and/or enucleation (n = 2) were performed...
February 6, 2019: Veterinary Ophthalmology
https://read.qxmd.com/read/30724448/comparative-efficacy-of-topical-oclacitinib-0-1-and-tacrolimus-0-01-in-canine-keratoconjunctivitis-sicca
#5
Juliana Kravetz de Oliveira, David L Williams, Camila Bollmann, Nathália Mendonça de Seabra, Mariza Bortolini, Fabiano Montiani-Ferreira
OBJECTIVE: To assess the efficacy of 0.1% oclacitinib as a single agent, and in combination with tacrolimus 0.01%, for the control of ophthalmic signs of keratoconjunctivitis sicca (KCS) in dogs. ANIMALS STUDIED: Thirty-two dogs (57 eyes) diagnosed with idiopathic KCS were included. Inclusion criteria were Schirmer Tear Test 1 (STT-1) values <15 mm/min and concurrent clinical signs such as ocular hyperemia and discharge. PROCEDURES: The animals were submitted to a randomized, open-label, 5-week study and divided into 3 treatment groups treated with the following ophthalmic solutions: (a) 0...
February 6, 2019: Veterinary Ophthalmology
https://read.qxmd.com/read/30716202/use-of-1-polidocanol-and-pre-and-post-computed-tomography-for-treatment-of-a-suspected-nasolacrimal-duct-cyst-in-a-dog
#6
Kelli L Zimmerman, Joseph D Stefanacci, Shari M Greenberg
OBJECTIVE: To describe the efficacy of the sclerosing agent 1% polidocanol in the treatment of a suspected nasolacrimal duct cyst in a dog. ANIMAL STUDIED: A 5-year-old castrated male Golden Retriever with chronic epiphora of the right eye. PROCEDURES: Ocular examination revealed epiphora and a negative Jones test of the right eye and was otherwise normal. Computed tomography with dacryocystography confirmed a cystic structure in the right ventral orbit that extended into the caudal nasal cavity adjacent to the orbit, causing partial physical obstruction of the right nasolacrimal duct...
February 4, 2019: Veterinary Ophthalmology
https://read.qxmd.com/read/30716201/comparison-of-two-cleaning-and-sterilization-protocols-of-diamond-burr-tips-used-in-debridement-for-canine-superficial-chronic-corneal-epithelial-defects
#7
Kayla C Banks, David E Stalla, Filiz E Bunyak, Tommi A White, Loren G Schultz, Elizabeth A Giuliano
OBJECTIVES: To serially evaluate morphologic and elemental composition changes to diamond burr tips (DBTs) comparing two sterilization protocols. ANIMALS STUDIED: A total of 300 fresh cadaver porcine globes. PROCEDURES: Six DBTs were randomly, equally assigned into Group 1 or 2, and then analyzed using Scanning Electron Microscopy (SEM) and Energy Dispersive Spectroscopy (EDS) at 0, 25, 50, and 100 cycles. Diamond burr debridement (DBD) was performed for 120 seconds on corneal stroma using the Algerbrush®...
February 4, 2019: Veterinary Ophthalmology
https://read.qxmd.com/read/30716199/eye-removal-following-parotid-duct-transposition-surgery-a-survey-of-current-practice-among-veterinary-ophthalmologists
#8
Jennifer L Zimmer, Kathryn A Diehl, Kathern E Myrna
OBJECTIVE: Identify dogs that required removal of an eye that had previously undergone a parotid duct transposition (PDT) and secondly to characterize demographics, surgical technique, and outcomes associated with it. PROCEDURE: An online survey was distributed to American College of Veterinary Ophthalmologists (ACVO) and Veterinary Ophthalmology (VOPH) listservs asking members to report the breed, reason for eye removal, time between surgeries, surgical technique, complications, and additional therapy instituted for dogs requiring removal of an eye subsequent to PDT surgery...
February 4, 2019: Veterinary Ophthalmology
https://read.qxmd.com/read/30716194/lipemic-uveitis-and-its-etiologies-in-dogs-75-cases
#9
Nathaniel P Violette, Eric C Ledbetter
OBJECTIVE: To describe clinical features of dogs with lipemic uveitis (LU). ANIMALS STUDIED: Seventy-five dogs (114 eyes) with LU. PROCEDURES: Medical records of dogs examined by the Cornell University ophthalmology service with a clinical diagnosis of LU between 2008 and 2017 were analyzed. Signalment and clinical case aspects, including concurrent ocular disease, systemic disease, and previous ophthalmic surgery, were recorded. RESULTS: Lipemic uveitis was diagnosed in 114 eyes of 75 dogs...
February 4, 2019: Veterinary Ophthalmology
https://read.qxmd.com/read/30716193/comparison-of-early-posttreatment-effects-of-two-steroidal-anti-inflammatory-ophthalmic-drugs-on-the-ocular-inflammatory-response-induced-by-paracentesis-in-healthy-canine-eyes
#10
Kazuaki Sato, Kiwako Iwasaki, Noriaki Nagai, Yohei Yamashita, Seishiro Chikazawa, Fumio Hoshi, Kazutaka Kanai
OBJECTIVE: We investigated the early posttreatment effects of two steroidal anti-inflammatory ophthalmic drugs on blood-aqueous barrier (BAB) breakdown by paracentesis in dogs. ANIMAL STUDIES: We studied 21 healthy beagles with normal eyes. PROCEDURES: Controlled anterior chamber paracentesis (0.5 mL) was performed in one eye of each dog. Control group dogs (n = 7) received no medication, whereas those in the treatment groups received a topical anti-inflammatory medication (difluprednate [DFBA] ophthalmic emulsion 0...
February 4, 2019: Veterinary Ophthalmology
https://read.qxmd.com/read/30716192/computed-tomographic-dimensions-of-the-normal-adult-equine-eye
#11
Anna R Hollis, Jonathon J Dixon, Davide Berlato, Rachel Murray, Renate Weller
There are limited data on whether the dimensions of the equine eye and its internal structures change with bodyweight in horses. The aim of this study was to identify whether the size of the equine eye and its individual structures varied in a predictable manner with bodyweight, and to examine the reliability of computed tomography (CT) scans in the measurement of the equine eye. Ninety horses which had undergone CT examination of the head for non-ocular disease were included. All measurements of the eye were performed twice on all eyes by the same operator to quantify intra-operator agreement, and in 10 cases were also performed by a second operator to quantify inter-operator agreement...
February 4, 2019: Veterinary Ophthalmology
https://read.qxmd.com/read/30716187/a-multicenter-retrospective-study-on-cryopreserved-amniotic-membrane-transplantation-for-the-treatment-of-complicated-corneal-ulcers-in-the-dog
#12
Daniel Costa, Marta Leiva, Fernando Sanz, Victoria Espejo, Javier Esteban, Jorge Vergara, Clinio Díaz, Eduardo Huguet, Martí Cairó, José Ríos, Maria Teresa Peña
OBJECTIVE: To describe the surgical technique and outcome of amniotic membrane transplantation (AMT) for treatment of complicated corneal ulcers in dogs. ANIMALS STUDIED: One hundred and eleven dogs. PROCEDURE: Medical records (2010-2017) were reviewed to identify canine patients that underwent AMT for the treatment of complicated corneal ulcers. Quantitative and ordinal variables were analyzed using Mann-Whitney U test and Fisher's Exact test...
February 4, 2019: Veterinary Ophthalmology
https://read.qxmd.com/read/30716186/canine-ocular-and-periocular-snakebites-requiring-enucleation-a-report-of-19-cases
#13
Erin M Scott, Brittany N Schlesener, Gillian C Shaw, Leandro B C Teixeira
PURPOSE: To describe the clinical and histopathologic features secondary to ocular and periocular snakebites in dogs requiring enucleation. METHODS: Retrospective review of patients with recorded snakebite envenomation from the archives of the Comparative Ocular Pathology Laboratory of Wisconsin (COPLOW) and Texas A&M Veterinary Medical Teaching Hospital (1997-2017). The cases included in this study required witnessed snakebites to the dog by the owner, clinical signs supportive of periocular or ocular envenomation, and/or histopathologic lesions compatible with snakebites...
February 4, 2019: Veterinary Ophthalmology
https://read.qxmd.com/read/30716185/serum-vascular-endothelial-growth-factor-changes-and-safety-after-topical-anti-human-vegf-antibody-bevacizumab-in-healthy-dogs
#14
Lisa-Marie Muellerleile, Alexander Tichy, Barbara Nell
OBJECTIVE: To evaluate ocular and general safety of topical anti-human VEGF bevacizumab and the effect on serum vascular endothelial growth factor (VEGF) values in healthy dogs. PROCEDURES: Nine university-owned beagles received 0.05 mL of 0.25% bevacizumab eyedrops (Avastin® , Roche) in one eye and 0.05 mL of 0.9% saline solution in the other eye as a control, administered at 12 hours intervals over a period of 28 days. Continuous monitoring for vital parameters and ocular examinations were conducted...
February 4, 2019: Veterinary Ophthalmology
https://read.qxmd.com/read/30716184/treatment-of-canine-postoperative-ocular-hypertension-with-combined-latanoprost-0-005-and-atropine-1-ophthalmic-solutions
#15
Michala de Linde Henriksen, Christine Lim, Julia L Sharp
OBJECTIVE: To compare the effects of topical 0.005% latanoprost (L) vs combined 0.005% latanoprost and 1% atropine (LA) on control of postoperative ocular hypertension (POH), development of posterior synechiae formation, pupil size, and blindness after phacoemulsification surgery in dogs. ANIMAL STUDIED: Dogs with postoperative ocular hypertension were included in the study: L-group, latanoprost (eight dogs, 14 eyes) and LA-group, latanoprost and atropine (nine dogs, 15 eyes)...
February 4, 2019: Veterinary Ophthalmology
https://read.qxmd.com/read/30715790/anterior-segment-parameters-in-normal-dogs-using-the-pentacam-%C3%A2-hr-scheimpflug-system
#16
Allison E Wolfel, Samantha L Pederson, Allison M Cleymaet, Ann M Hess, Kate S Freeman
OBJECTIVE: To describe and compare normative anterior segment parameters between canine age groups using the Pentacam® HR Scheimpflug camera (Pentacam). ANIMALS STUDIED: Thirty-six sedated dogs (60 eyes) of varying ages and breeds were imaged with the Pentacam; only nondiseased anterior segments were included. PROCEDURES: Dogs were divided into three age groups: Group 1 (1-5 years), Group 2 (6-10 years), and Group 3 (11-15 years). Values assessed included central corneal thickness (CCT), anterior and posterior corneal elevation (ACE/PCE), anterior and posterior corneal curvature metrics, corneal volume (CV), anterior and posterior corneal astigmatism (AA/PA), anterior chamber depth (ACD), anterior chamber volume (ACV), and anterior chamber angle (ACA)...
February 4, 2019: Veterinary Ophthalmology
https://read.qxmd.com/read/30715787/congenital-lacrimal-fistula-in-two-prim-holstein-calves
#17
Sophie Jugant, Marie-Claire Robin, Alain Regnier, Hervé Cassard, Nicolas Herman, Fabrice Conchou, Jean-Yves Douet
Two 4- and 8-month-old prim'Holstein calves were presented for chronic epiphora. Examination of the affected eyes revealed an abnormal duct opening inferonasal to the medial canthus. A diagnosis of congenital lacrimal fistula was made based on conventional and computed tomographic-dacryocystography findings. These revealed an ectopic channel connecting the nasolacrimal duct to the skin opening near the medial canthus. Both of the calves were surgically treated with resection and closure of the ectopic duct and placement of a nasolacrimal stent...
February 4, 2019: Veterinary Ophthalmology
https://read.qxmd.com/read/30715783/ocular-dermoids-in-dogs-a-retrospective-study
#18
Zachary Badanes, Eric C Ledbetter
OBJECTIVE: To describe clinical features of dogs diagnosed with ocular dermoids at two veterinary teaching hospitals. ANIMALS STUDIED: Retrospective case series of 44 dogs (49 dermoids) with ocular dermoids. PROCEDURES: Medical records of dogs evaluated by the Cornell University and University of Pennsylvania ophthalmology services were evaluated to identify dogs with a clinical diagnosis of ocular dermoids between 2004 and 2018, and 2011 and 2018, respectively...
February 4, 2019: Veterinary Ophthalmology
https://read.qxmd.com/read/30715781/subconjunctival-bone-marrow-derived-mesenchymal-stem-cell-therapy-as-a-novel-treatment-alternative-for-equine-immune-mediated-keratitis-a-case-series
#19
Amanda B Davis, Lauren V Schnabel, Brian C Gilger
Equine immune-mediated keratitis (IMMK) leads to increased corneal opacity and inflammation secondary to an alteration of the local immune system. Bone marrow-derived mesenchymal stem cells (BM-MSC) have been shown to modulate the immune system by downregulating inflammation. Four horses with unilateral IMMK poorly responsive to traditional medical treatments underwent novel, autologous subconjunctival BM-MSC therapy. Bone marrow was harvested and processed as previously described for equine orthopedic disease...
February 4, 2019: Veterinary Ophthalmology
https://read.qxmd.com/read/30715776/assessment-of-meibomian-gland-morphology-by-noncontact-infrared-meibography-in-shih-tzu-dogs-with-or-without-keratoconjunctivitis-sicca
#20
Yasunari Kitamura, Seiya Maehara, Tetsuya Nakade, Yukihiro Miwa, Reiko Arita, Hiroko Iwashita, Akihiko Saito
OBJECTIVE: To investigate meibomian gland (MG) morphology by noncontact infrared meibography in Shih Tzu dogs with or without keratoconjunctivitis sicca (KCS). PROCEDURES: Fourteen eyes of 12 Shih Tzu dogs (mean age of 10.7 years, range of 7-13 years) presented to Yakumo Animal Hospital or Triangle Animal Eye Clinic from 2011 to 2017 with clinical signs and a Schirmer tear test (STT) result consistent with KCS (<10 mm/min) were examined. Twenty-eight eyes of 16 Shih Tzu dogs (mean age of 12...
February 4, 2019: Veterinary Ophthalmology
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