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Veterinary Ophthalmology

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https://www.readbyqxmd.com/read/28635138/snake-spectacle-vessel-permeability-to-sodium-fluorescein
#1
Roy W Bellhorn, Ann R Strom, Monica J Motta, John Doval, Michelle G Hawkins, Joanne Paul-Murphy
OBJECTIVE: Assess vascular permeability of the snake spectacle to sodium fluorescein during resting and shedding phases of the ecdysis cycle. ANIMAL STUDIED: Ball python (Python regius). PROCEDURES: The snake was anesthetized, and spectral domain optic coherence tomography was performed prior to angiographic procedures. An electronically controlled digital single-lens reflex camera with a dual-head flash equipped with filters suitable for fluorescein angiography was used to make images...
June 20, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28635137/effect-of-body-position-eyelid-manipulation-and-manual-jugular-compression-on-intraocular-pressure-in-clinically-normal-cats
#2
Seyed Mehdi Rajaei, Faezeh Asadi, Mohammad Reza Rajabian, Hesam Ostadhassan, Manuela Crasta
OBJECTIVE: To determine the effect of body position, eyelid manipulation, and manual jugular compression on intraocular pressure (IOP) in clinically normal cats. ANIMAL STUDIED: TWENTY-ONE ADULT CLIENT-OWNED DOMESTIC SHORTHAIR CATS: PROCEDURES: The IOP was measured by means of rebound tonometer. A baseline IOP was measured in all cats in ventral recumbency with normal head position (horizontal to the ground) with no pressure on the neck or eyelids. To measure the IOP in dorsal recumbency, each cat was held in the dorsal recumbency position for 5 min...
June 20, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28598549/the-presence-of-minocycline-in-the-tear-film-of-normal-horses-following-oral-administration-and-its-anticollagenase-activity
#3
Caroline S Monk, Sun Young Jeong, Daniel James Gibson, Caryn E Plummer
PURPOSE: Tetracyclines have activity against matrix metalloproteinases (MMP). Oral medications with effects on the ocular surface are of interest in patients where repeated topical dosing is limited. The aim of this study was to characterize the concentration of minocycline in the tears of normal horses after oral administration and to determine if this level directly inhibits MMP activity. METHODS: Five healthy adult ponies were administered oral minocycline (Wedgewood Pharmacy; Swedesboro, NJ) at 4 mg/kg every 12 h for 5 days...
June 9, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28597994/corneal-sensitivity-and-tear-production-in-108-horses-with-ocular-disease
#4
Kelly E Knickelbein, Nicole M Scherrer, Mary Lassaline
PURPOSE: To compare corneal sensitivity and tear production in horses with keratitis to horses with other ocular disease. METHOD: Retrospective medical record review was used to identify equine patients presented during a 1-year period for an ocular complaint who had Schirmer Tear Test (STT) or Corneal Touch Threshold (CTT) measured. Variables studied included patient age and sex; affected eye; category of presenting ocular complaint (keratitis vs. other ocular complaint); STT; and CTT...
June 9, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28557367/septic-keratitis-in-dogs-cats-and-horses-in-switzerland-associated-bacteria-and-antibiotic-susceptibility
#5
Anja Suter, Katrin Voelter, Sonja Hartnack, Bernhard Martin Spiess, Simon Anton Pot
OBJECTIVE: To evaluate the most common bacterial pathogens associated with septic keratitis in veterinary patients from Switzerland. The second objective was to analyze antibiotic susceptibility test results of the identified bacterial pathogens. The third objective was to evaluate potential breed predispositions to septic keratitis. PROCEDURES: Two hundred and fifty-five cultures and antibiotic susceptibility reports from dogs, cats, and horses with septic keratitis that were presented to the University of Zurich Veterinary Medical Teaching Hospital between 2009 and 2013 were reviewed...
May 29, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28508467/keratitis-due-to-microfilariae-in-dogs-a-newly-recognized-disease
#6
Adriana Morales, Eduardo Perlmann, Aline Nayara Vechiato Abelha, Carlos Emilio Levy, Ana Carolina Almeida de Goes, Angélica M V Safatle
Parasitic agents have been associated with keratitis, but a diagnosis of parasitic keratitis has not been commonly made in domestic animals. The purpose of this study was to describe the clinical and histopathological findings in seven dogs with chronic keratitis caused by microfilariae diagnosed in Brazil. All dogs presented with superficial corneal opacities of varying degrees affecting the perilimbal and central regions of the cornea, with other opaque areas appearing as crystalline deposits and corneal vascularization...
May 15, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28503796/influence-of-an-intentionally-induced-posterior-lens-capsule-rupture-on-the-real-time-intraocular-pressure-during-phacoemulsification-in-canine-ex-vivo-eyes
#7
Seonmi Kang, Sangwan Park, Eunjin Park, Jaegook Lim, Kangmoon Seo
OBJECTIVE: To evaluate the changes in the intraocular pressure (IOP) following an intentionally induced posterior lens capsule rupture (PLCR) during phacoemulsification in enucleated canine eyes. Furthermore, to compare the IOPs between different stages of phacoemulsification for two different bottle heights (BH). PROCEDURES: Coaxial phacoemulsification was performed using a venturi-based machine at a 60 or 90 cm BH. A pressure transducer, inserted into the anterior chamber through the peripheral cornea, monitored real-time IOP...
May 15, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28493440/tear-production-intraocular-pressure-and-conjunctival-bacterial-flora-in-selected-captive-wild-ruminants
#8
Pavel Kvapil, Tina Pirš, Brigita Slavec, Roman Luštrik, Tadej Zemljič, Eva Bártová, Bojana Stranjac, Marjan Kastelic
OBJECTIVE: Evaluation of tear production (Schirmer's tear test, STT) and measurement of intraocular pressure (IOP) were performed in a population of captive wild ungulates in a Slovenian ZOO during routine annual health check. ANIMALS STUDIED: In total, 10 fallow deer (Dama dama), 25 mouflons (Ovis aries musimon), 20 alpine ibexes (Capra ibex), and three alpine chamois (Rupicapra rupicapra) were included in the study. METHODS: Tear production was performed by Schirmer's tear test, IOP was measured with an applanation tonometer, and ophthalmological examination was conducted with slit-lamp biomicroscopy and indirect ophthalmoscopy...
May 11, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28493448/utility-of-an-immunocytochemical-assay-using-aqueous-humor-in-the-diagnosis-of-feline-infectious-peritonitis
#9
Sandra Felten, Kaspar Matiasek, Stefanie Gruendl, Laura Sangl, Katrin Hartmann
OBJECTIVE: In cats suffering from feline infectious peritonitis (FIP) without effusion, antemortem diagnosis is challenging. Uveitis is common in these cats. It was the aim of this study to evaluate sensitivity and specificity of an immunocytochemical assay (ICC) in aqueous humor of cats suspected of having FIP. ANIMALS STUDIED: The study included 26 cats with immunohistochemically confirmed FIP and 12 control cats for which FIP was suspected due to similar clinical or laboratory changes, but which suffered from other diseases confirmed via histopathology...
May 10, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28480600/ophthalmic-parameters-in-adult-lowland-paca-cuniculus-paca-raised-in-captivity
#10
Camila P Balthazar da Silveira, Tiago B Lima, Roberta M Crivelaro, Luciana C C de Lacerda, Ivan R M Pádua, Roberta Renzo, Alexandre A F de Barros Sobrinho, Fabrício S Oliveira, Marcela Aldrovani, José L Laus
OBJECTIVE: To investigate the ophthalmic parameters of lowland pacas, including the anatomic features, tear production, intraocular pressure, central corneal thickness, and morphology of the corneal endothelium. ANIMALS STUDIED: Thirteen adult, anesthetized Cuniculus paca. PROCEDURE: Eyes were evaluated using slit-lamp biomicroscopy, the Schirmer tear test I, digital applanation tonometry, binocular indirect ophthalmoscopy, and noncontact specular microscopy...
May 8, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28470741/canine-oral-mucosa-evaluation-as-a-potential-autograft-tissue-for-the-treatment-of-unresponsive-keratoconjunctivitis-sicca
#11
Rose L Cherry, Jodi D Smith, Gil Ben-Shlomo
PURPOSE: Labial mucosa transplantation for the treatment of canine keratoconjunctivitis sicca (KCS) has been reported recently. Postoperative alleviation of clinical signs was noted and assumed to be the result of labial salivary glands providing lubrication to the ocular tissue. The aim of this study was to evaluate the presence of minor salivary glands (MSG) in the canine oral mucosa. METHODS: Oral mucosal biopsies were collected from six dogs that died (n = 1) or were euthanized (n = 5) for reasons unrelated to this study...
May 4, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28444876/cataracts-in-a-population-of-bengal-cats-in-france
#12
Aurélie Bourguet, Gilles Chaudieu, Alice Briatta, Alexandre Guyonnet, Marie Abitbol, Sabine Chahory
OBJECTIVE: To document the clinical appearance and prevalence of cataracts in a French population of Bengal cats. METHODS: Two distinct populations of Bengal cats were examined as follows: (i) 51 animals recruited for evaluation of national prevalence of ocular diseases in an observational study conducted between October 2014 and November 2016 at the Alfort ophthalmology unit; (ii) 12 patients referred for cataract diagnosis examined at a veterinary eye clinic located in central France, between December 2014 and February 2016...
April 25, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28444838/modified-brow-suspension-technique-for-the-treatment-of-pseudoptosis-due-to-redundant-frontal-skin-in-the-dog-a-retrospective-study-of-25-cases
#13
Martí Cairó, Marta Leiva, Daniel Costa, Maria Teresa Peña
PURPOSE: To describe the outcome of modified brow suspension technique for the treatment of upper eyelid pseudoptosis in canine patients with redundant frontal skin folds. METHODS: Medical records from 1999 to 2015 were retrospectively reviewed. Only dogs that underwent modified brow suspension for treating bilateral pseudoptosis were included in the study. Recorded data included breed, age, gender, main ophthalmic complaint, ocular findings, suture material used for brow suspension, number of slings placed, postoperative treatment, complications, follow-up time, and outcome...
April 25, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28417524/biofilms-of-candida-spp-from-the-ocular-conjunctiva-of-horses-with-reduced-azole-susceptibility-a-complicating-factor-for-the-treatment-of-keratomycosis
#14
Raimunda Sâmia Nogueira Brilhante, Paula Vago Bittencourt, Débora de Souza Collares Castelo-Branco, Glaucia Morgana de Melo Guedes, Jonathas Sales de Oliveira, Lucas Pereira Alencar, Rossana de Aguiar Cordeiro, Mariana Pinheiro, Evilázio Fernandes Nogueira-Filho, Waldemiro de Aquino Pereira-Neto, José Júlio Costa Sidrim, Marcos Fábio Gadelha Rocha
OBJECTIVES: This study aimed to assess the biofilm-forming ability of Candida spp. from the ocular conjunctiva of horses and to investigate the antifungal susceptibility of these biofilms. PROCEDURES: Initially, the biofilm-forming ability of 15 strains was assessed by crystal violet staining, which reveals the fungal biomass adhered to the polystyrene plates, and scanning electron microscopy. Then, the minimum inhibitory concentrations (MICs) of amphotericin B, fluconazole, itraconazole, and caspofungin were initially determined against strains in planktonic form...
April 18, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28419669/recognizing-our-reviewers
#15
(no author information available yet)
No abstract text is available yet for this article.
April 17, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28378446/lack-of-consensus-on-consensual-response
#16
Tara M Stonex, Joshua T Bartoe, Gustavo D Aguirre
The pupillary light reflex (PLR) is a routinely utilized clinical test to quickly assess integrity of subcortical light perception pathways in patients. While interpretation is simple for ophthalmologists, interestingly discrepancy occurs in annotation of the test results, especially for the consensual response. An email survey sent to diplomates of either the American or European Colleges of Veterinary Ophthalmologists (ACVO and ECVO, respectively), requesting use of a 'direct/consensual' annotation convention, showed 58% of respondents preferred one convention while 39% preferred a different convention...
April 4, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/27471166/scotopic-electroretinography-in-fishing-cat-prionailurus-viverrinus-and-leopard-cat-prionailurus-bengalensis
#17
Metita Sussadee, Narathip Vorawattanatham, Anuchai Pinyopummin, Janjira Phavaphutanon, Aree Thayananuphat
OBJECTIVE: To establish baseline normal scotopic electroretinograpic (ERG) parameters for two wild cat species: fishing cats (FC) and leopard cats (LC). ANIMAL STUDIED: Twelve normal, FC and eight LC kept in the Chiang Mai Night Safari Zoo, Thailand. The mean ages of FC and LC were 7.08 and 5.00 years, respectively. PROCEDURE: All animals were studied using a standard scotopic protocol of a portable, handheld, multi-species electroretinography (HMsERG)...
May 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/27302683/fundus-photography-with-a-smartphone-in-indirect-ophthalmoscopy-in-dogs-and-cats
#18
Nobuyuki Kanemaki, Mizuho Inaniwa, Kunihiko Terakado, Shinpei Kawarai, Yoichiro Ichikawa
OBJECTIVE: To introduce a simple method for fundus photography of dogs and cats using a smartphone and indirect ophthalmoscopy lenses. METHODS: Fundus photographs of dogs and cats with transparent ocular media were obtained with 15D, 20D, 28D, and 40D indirect lenses and an iPhone-6, in a dark room and after pharmacologic pupil dilation. The photographs were recorded as still images using a video application and a video-to-still image application. Two types of neutral density (ND) filters were used as required for reduction of the torch illumination power of the iPhone...
May 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/27302599/effect-of-prolonged-photoperiod-on-ocular-tissues-of-domestic-turkeys
#19
Marina L Leis, Mary-Magdalene U Dodd, Gregory Starrak, Catherine J Vermette, Susantha Gomis, Bianca S Bauer, Lynne S Sandmeyer, Karen Schwean-Lardner, Henry L Classen, Bruce H Grahn
OBJECTIVE: The objective of this study is to investigate the structural and functional ocular changes that develop in turkeys exposed to a photoperiod of 23 h of light (23L) compared with a photoperiod of 14 h of light (14L). PROCEDURES: Ten-day-old Nicholas heavy strain poults were exposed to either a 14L or 23L photoperiod. Between 16 and 18 weeks of age, equal numbers of turkeys per treatment group underwent ophthalmic examination (biomicroscopy, indirect ophthalmoscopy) (n = 14), refractometry (n = 20), keratometry (n = 20), tonometry (n = 20), and full-field electroretinography (ERG) (n = 14)...
May 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/27251018/gross-histologic-and-computed-tomographic-characterization-of-nonpathological-intrascleral-cartilage-and-bone-in-the-domestic-goat-capra-aegagrus-hircus
#20
Charlotte A Tusler, Kathryn L Good, David J Maggs, Allison L Zwingenberger, Christopher M Reilly
OBJECTIVE: To characterize grossly, histologically, and via computed tomography (CT) the appearance of intrascleral cartilage, bone, or both in domestic goats with otherwise normal eyes and to correlate this with age, sex, and breed. ANIMALS STUDIED: Sixty-eight domestic goats (89 eyes). PROCEDURES: Forty-nine formalin-fixed globes from 38 goats underwent high-resolution CT, and gross and light microscopic examination. An additional 40 eyes from 30 goats underwent light microscopy only...
May 2017: Veterinary Ophthalmology
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