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Veterinary Ophthalmology

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
(no author information available yet)
No abstract text is available yet for this article.
April 17, 2017: Veterinary Ophthalmology
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
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
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
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
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
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
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
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
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
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
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
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
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
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
Daniel M Dorbandt, Amber L Labelle, Mark A Mitchell, Ralph E Hamor
PURPOSE: To determine the immediate and chronic effects of topical 0.1% diclofenac and 0.03% flurbiprofen on corneal sensitivity in normal canine eyes. ANIMALS STUDIED: Eighteen normal, nonbrachycephalic dogs. METHODS: A prospective, randomized, masked, crossover study was performed. To determine the immediate effects associated with treatment, the study drug was instilled into the eye every 5 min for five doses, and corneal sensitivity of treated and untreated eyes was obtained prior to treatment and every 15 min post-treatment for 60 min...
March 2017: Veterinary Ophthalmology
Jessica E McDonald, Amy M Knollinger, D Dustin Dees, Nicole E MacLaren
PURPOSE: To evaluate intraocular pressure (IOP) estimates in eyes of healthy alpacas (Vicugña pacos) using rebound (TonoVet(®) ) in comparison with applanation (TonoPen-XL(®) ) tonometry. METHODS: Complete ophthalmic examinations were performed on forty healthy alpacas (80 eyes). IOP measurements using both TonoVet(®) and TonoPen-XL(®) tonometers were obtained OU. Data were analyzed, using a doubly repeated-measures anova design and Student's paired t-test, with P ≤ 0...
March 2017: Veterinary Ophthalmology
Charlotte Barbé, Isabelle Raymond-Letron, Guillaume-Pierre Mias, Julien Charron, Frédéric Goulle
BACKGROUND: Development of cysts has been reported as a potential complication after surgical repositioning of nictitating membrane gland protrusion using the conjunctival pocket technique. To the authors' knowledge, no treatment for these cysts has ever been published. OBJECTIVES: This short case series describes a surgical technique of marsupialization as a treatment option for these cysts and proposes a pathogenesis for cyst formation. CASES DESCRIPTION: Three dogs were each referred for a unilateral subconjunctival mass-like lesion involving the bulbar side of the nictitating membrane...
March 2017: Veterinary Ophthalmology
Sarah Koll, Sven Reese, Ivica Medugorac, Carsten U Rosenhagen, Rick F Sanchez, Roberto Köstlin
OBJECTIVE: To analyze the change in prevalence and incidence of hereditary eye diseases (HED) in dachshunds due to breeding regulations based on biennial examinations performed by the German panel of veterinary ophthalmologists (DOK) from 1998 to 2011. ANIMALS INCLUDED: A total of 12 242 dachshunds examined by the DOK and pedigree data of 318 852 dachshunds provided by the German Dachshund Club (DTK). PROCEDURES: The prevalence of congenital cataract (CC), distichiasis (DIST), hereditary cataract (HC), persistent pupillary membranes (PPMs), persistent hyperplastic tunica vasculosa lentis / persistent hyperplastic primary vitreous (PHTVL/PHPV), progressive retinal atrophy (PRA), retinal dysplasia (RD), and findings such as fiberglass-like cataract (FGC) and prominent suture lines (PSLs) was analyzed...
March 2017: Veterinary Ophthalmology
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