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Veterinary Ophthalmology

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https://www.readbyqxmd.com/read/28856832/central-retinal-preservation-in-rdac-cats
#1
Andrea Louise Minella, Laurence Mireille Occelli, Kristina Narfström, Simon Michael Petersen-Jones
OBJECTIVE: Children with Leber congenital amaurosis (LCA) due to CEP290 mutations show characteristic macular preservation. Spectral domain-optical coherence tomography (SD-OCT) is a noninvasive technique to investigate retinal structural changes. Loss of integrity of the ellipsoid zone (EZ) on OCT in people with retinal disease has been associated with loss of visual function and is a useful measure of retinal disease progression. We hypothesized that rdAc felines with Cep290 mutation would have a similar pattern of degeneration, with relative central retinal preservation associated with maintenance of the EZ...
August 30, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28845603/comparison-of-anterior-segment-health-in-wild-and-captive-common-murres
#2
Kate S Freeman, Christine Fiorello, Michael Murray
OBJECTIVE: To evaluate and compare the anterior segment health of wild and captive common murres. PROCEDURES: Thirty wild common murres (Uria aalge) were captured and housed in freshwater pools and had an adnexal and anterior segment exam performed prior to a subsequent wildlife health study. The examination included phenol red thread tear tests, fluorescein staining, slit-lamp biomicroscopy, rebound tonometry, and conjunctival culture sampling. Six captive common murres housed in natural seawater at the Monterey Bay Aquarium were examined in a similar manner...
August 27, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28845579/tear-fluid-collection-in-dogs-and-cats-using-ophthalmic-sponges
#3
Lionel Sebbag, Danielle M Harrington, Jonathan P Mochel
OBJECTIVE: To compare the use of two ophthalmic sponges for tear collection in dogs and cats. ANIMALS STUDIED: Ten healthy dogs and 10 healthy cats. PROCEDURES: A strip (4 × 10 mm) of either cellulose or polyvinyl acetal (PVA) sponge was inserted into the ventral fornix of each eye for either 15, 30, or 60 s. The wetted strip was placed into a 0.2-mL tube that was first punctured at its bottom. Tears were eluted through the drainage hole into a 1...
August 27, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28845574/enucleation-or-exenteration-in-two-dogs-with-previous-parotid-duct-transposition-parotid-duct-ligation-versus-reverse-parotid-duct-transposition
#4
Whitney M Young, Caroline M Betbeze, Stephen C Fisher, James P Boulay
Two dogs with previous parotid duct transpositions presented with unrelated ocular disease. In both cases, ophthalmic examination revealed the need for enucleation or exenteration. In case 1, systemic coccidioidomycosis was diagnosed with panuveitis and secondary glaucoma of the left eye. In this case, the parotid duct was ligated at the time of enucleation to stop salivary secretions. This dog encountered morbidity in the form of a sialocele that did not resolve for 11 months. In case 2, ultrasound and computed tomography revealed a discrete mass within the left medial orbit that was suspected to arise from the nictitating membrane...
August 27, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28845542/cofactors-associated-with-sudden-acquired-retinal-degeneration-syndrome-151-dogs-within-a-reference-population
#5
Candace R Auten, Sara M Thomasy, Philip H Kass, Kathryn L Good, Steven R Hollingsworth, David J Maggs
OBJECTIVE: To determine factors associated with sudden acquired retinal degeneration syndrome (SARDS) diagnosed within one referral population. ANIMALS STUDIED: 151 dogs diagnosed with SARDS. PROCEDURES: Breed, age, sex, and body weight were compared between dogs with electroretinogram-confirmed SARDS and dogs presented to the UC Davis Veterinary Medical Teaching Hospital (UCD-VMTH) from 1991 to 2014. RESULTS: SARDS was diagnosed in 151 dogs, representing 1...
August 27, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28799265/surgical-excision-of-a-feline-orbital-lacrimal-gland-adenocarcinoma-with-adjunctive-cryotherapy-and-carboplatin-impregnated-bead-implantation
#6
Daniel M Dorbandt, Alycen P Lundberg, Patrick J Roady, Jane A Huey, Heidi Phillips, Ralph E Hamor
The purpose of this report was to discuss the diagnosis, treatment, and outcome of a cat with an orbital lacrimal gland adenocarcinoma. A 14.5-year-old spayed female domestic shorthair cat was evaluated for a firm swelling at the left dorsotemporal orbital rim. The orbital mass was excised with preservation of the globe, and adjunctive cryotherapy was performed. A definitive diagnosis of lacrimal gland adenocarcinoma was obtained after histopathologic evaluation and histochemical staining with periodic acid-Schiff and mucicarmine...
August 10, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28799185/punctate-retinal-hemorrhage-and-its-relation-to-ocular-and-systemic-disease-in-dogs-83-cases
#7
Nathaniel P Violette, Eric C Ledbetter
OBJECTIVE: To describe clinical aspects of dogs with punctate retinal hemorrhage (PRH). ANIMALS STUDIED: 83 dogs (119 eyes) with PRH. PROCEDURES: Medical records of dogs evaluated by the Cornell University ophthalmology service with a clinical diagnosis of PRH between 2006 and 2015 were reviewed. For this study, PRH was defined as retinal hemorrhages ≤ 1 optic disk diameter in size and dogs with other posterior segment ocular diseases were excluded...
August 10, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28782234/causes-and-outcomes-of-dogs-presenting-with-hyphema-to-a-referral-hospital-in-colorado-a-retrospective-analysis-of-99-cases
#8
Maggie R Jinks, Francisco Olea-Popelka, Kate S Freeman
OBJECTIVE: To investigate the causes of hyphema in dogs and identify factors associated with poor visual outcomes. ANIMALS STUDIED: Ninety-nine dogs (120 eyes) that presented with hyphema. PROCEDURE: Medical records from the Colorado State University Veterinary Teaching Hospital between the years 2004-2015 were reviewed. RESULTS: Overall, 36.4% of dogs were diagnosed with hyphema from systemic causes, 32.9% due to local ocular disease, 26...
August 6, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28776921/retinal-detachment-and-glaucoma-in-the-boston-terrier-and-shih-tzu-following-phacoemulsification-135-patients-2000-2014
#9
Braidee C Foote, Samantha L Pederson, Anja Welihozkiy, Jessica M Stine, Susan M Carastro, Stacy E Andrew, Tammy M Michau
OBJECTIVES: To report the cumulative incidence of retinal detachment (RD) and glaucoma following phacoemulsification in Boston Terriers and Shih Tzu in the southeastern United States over a 14-year period and investigate the potential predisposing risk factors. METHODS: Medical records of 83 Shih Tzu and 52 Boston Terriers that underwent phacoemulsification between 2000 and 2014, with or without intraocular lens placement, were reviewed. For a comparison population, phacoemulsification data from 45 Labrador Retrievers, 73 Schnauzers, and 159 Bichon Frises were evaluated...
August 3, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28745006/nevus-of-ota-oculodermal-melanocytosis-in-a-dog
#10
Pedro Malho, Anita Shea, David Donaldson
A 5-year-old, female, spayed Rhodesian Ridgeback presented with ocular melanocytosis and skin hyperpigmentation involving the distribution of the first and second divisions of the trigeminal nerve on the right side of the face. The dermatomal pattern of the hyperpigmentation was similar to nevus of Ota or oculodermal melanocytosis reported in humans. This condition has been associated with increased risk of developing secondary glaucoma and melanoma transformation in skin, ocular, orbital tissues, and the central nervous system...
July 25, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28714289/abstracts
#11
(no author information available yet)
No abstract text is available yet for this article.
July 17, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28714237/effects-of-intracameral-ascorbic-acid-on-the-corneal-endothelium-of-dogs-undergoing-phacoemulsification
#12
Ivan R M Padua, Gisele P Valdetaro, Tiago B Lima, Karina K Kobashigawa, Paloma E S Silva, Marcela Aldrovani, Pedro P M Padua, Jose L Laus
OBJECTIVE: Cataracts are the most common ocular disorder in dogs. Phacoemulsification is the preferred treatment method among ophthalmologists, but the cellularity of the endothelium must be considered for its success, as endothelial lesions may produce permanent corneal decompensation. The objective of this study was to evaluate the effects of intracameral ascorbic acid, a known antioxidant, on the corneal endothelium of dogs undergoing phacoemulsification. ANIMAL STUDIED: In all, 40 eyes from 20 dogs, males and females from 7 to 12 years of age, were assessed for mature cataracts...
July 17, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28714189/esthesiometric-evaluation-of-corneal-analgesia-after-topical-application-of-1-morphine-sulfate-in-normal-horses
#13
Emma Gordon, Christy Sandquist, Christopher K Cebra, Jerry Heidel, Keith Poulsen, John W Schlipf
OBJECTIVE: To evaluate whether topical ocular application of 1% morphine sulfate would change corneal sensitivity and to identify the duration of action. ANIMAL STUDIED: Eight healthy adult horses. PROCEDURE: Corneal touch threshold (CTT) was measured in the center of one randomly selected eye of each horse by Cochet-Bonnet esthesiometer (Luneau Cochet-Bonnet Esthesiometer; Western Ophthalmics, Lynnwood, WA, USA). Immediately following baseline CTT measurement, 0...
July 17, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28714087/clinical-and-pathological-classification-of-canine-intraocular-lymphoma
#14
Matthew R Lanza, Ayla R Musciano, Richard D Dubielzig, Amy C Durham
The objectives of this retrospective study of 100 dogs with intraocular lymphoma were to describe the histomorphologic and immunohistochemical features of canine intraocular lymphoma, determine the proportion of cases with presumed solitary ocular lymphoma (PSOL) compared to multicentric disease, and assess the clinical outcomes of these patients. Selected cases from Penn Vet Diagnostic Laboratory and Comparative Ocular Pathology Lab of Wisconsin (2004-2015) were evaluated and subtyped using the WHO classification system...
July 17, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28702949/genetic-analysis-of-optic-nerve-head-coloboma-in-the-nova-scotia-duck-tolling-retriever-identifies-discordance-with-the-nhej1-intronic-deletion-collie-eye-anomaly-mutation
#15
Emily A Brown, Sara M Thomasy, Christopher J Murphy, Danika L Bannasch
Collie eye anomaly (CEA) encompasses a spectrum of different ophthalmic phenotypes from clinically inconsequential choroidal hypoplasia to blindness from coloboma of the optic nerve head (ONH). A previous study found a 7.8-kb deletion in intron 4 of the NHEJ1 gene to be associated with CEA. A genetic test based on this association is recommended for many breeds, including the Nova Scotia Duck Tolling Retriever (NSDTR). Collection of ONH coloboma-affected NSDTR showed lack of concordance of the NHEJ1 intronic deletion with ONH coloboma...
July 12, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28685998/iridociliary-cysts-masquerading-as-neoplasia-in-cats-a-morphologic-review-of-14-cases
#16
Jessica A Fragola, Richard R Dubielzig, Ellison Bentley, Leandro B C Teixeira
OBJECTIVE: To report 14 neoplasia-free feline eyes enucleated for suspected intraocular neoplasia containing only iridociliary cysts. To analyze clinical findings that may have led veterinarians to suspect neoplasia in these globes. PROCEDURES: The archives at the Comparative Ocular Pathology Laboratory of Wisconsin (COPLOW) were searched to identify neoplasia-free feline globes enucleated for suspected neoplasia. Clinical data were obtained from medical records, veterinarian surveys, and COPLOW submission forms...
July 6, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28685927/altering-equine-corneal-fibroblast-differentiation-through-smad-gene-transfer
#17
Todd L Marlo, Elizabeth A Giuliano, Ratnakar Tripathi, Ajay Sharma, Rajiv R Mohan
OBJECTIVE: To explore the impact of equine corneal fibroblast (ECF) to myofibroblast (ECM) differentiation by altering the expression of the Smad genes either individually or in combination. Specifically, we sought to examine the ECF differentiation after (a) silencing of Smad2, 3, and 4 profibrotic genes individually and (b) overexpression of antifibrotic Smad7 gene and in a combination with pro- and antifibrotic Smad genes. METHODS: Equine corneal fibroblast primary cultures were generated as previously described...
July 6, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28653355/strip-meniscometry-in-dogs-cats-and-rabbits
#18
Seyed Mehdi Rajaei, Maneli Ansari Mood, Faezeh Asadi, Mohammad Reza Rajabian, Leila Aghajanpour
OBJECTIVE: The purpose of this study was to establish the normal values of strip meniscometry (SM) as a lacrimal function test and to compare the results with Schirmer tear test I (STT I) in dogs, cats, and rabbits. ANIMALS STUDIED: Sixty healthy adult dogs from twelve different breeds (120 eyes), twenty adult healthy domestic shorthair cats (40 eyes) and eighteen adult healthy New Zealand white rabbits (36 eyes) were used in this study. PROCEDURES: Lacrimal function was tested by SM tube in all animals...
June 26, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/27480042/effect-of-bandage-contact-lens-wear-and-postoperative-medical-therapies-on-corneal-healing-rate-after-diamond-burr-debridement-in-dogs
#19
D Dustin Dees, Kevin J Fritz, Lynsey Wagner, Danielle Paglia, Amy M Knollinger, Richard Madsen
PURPOSE: To determine the effect of bandage contact lens wear and type of post-operative medical treatment on corneal healing rates in dogs after diamond burr debridement. ANIMALS STUDIED: 237 client-owned dogs. PROCEDURES: Canine patients having undergone diamond burr debridement (DBD) for treatment of spontaneous chronic corneal epithelial defects (SCCEDs) were included. Patients were put into 1 of 12 different groups based on type of postoperative medical regimen and whether a bandage contact lens (BCL) was utilized...
September 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/27317499/extraocular-muscle-dysinnervation-disorder-resembling-duane-retraction-syndrome-in-a-9-month-old-french-bulldog
#20
Lorenzo Mari, Benjamin T Blacklock, Renata Stavinohova, Luisa De Risio
A 9-month-old French Bulldog was presented with a chronic history of lateral strabismus and intermittent third eyelid protrusion in the left eye. The neuro-ophthalmological examination revealed mild ptosis of the left upper eyelid, mild lateral strabismus, and external ophthalmoparesis of the left eye. Retraction and ventral deviation of the left eye globe with protrusion of the third eyelid and elevation of the upper eyelid were elicited on attempted voluntary adduction of the left eye. Hematology, serum biochemistry, serology for infectious diseases, magnetic resonance of the head, and cerebrospinal fluid analysis did not reveal significant abnormalities...
September 2017: Veterinary Ophthalmology
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