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Veterinary Ophthalmology

Lionel Sebbag, Shin Ae Park, Philip H Kass, David J Maggs, Mayssa Attar, Christopher J Murphy
OBJECTIVE: To evaluate repeatability and reproducibility of tear osmolarity measured using the TearLab(™) osmometer in normal dogs and to assess its diagnostic potential in dogs with keratoconjunctivitis sicca (KCS). ANIMALS STUDIED: Beagle dogs; six normal and five with KCS. PROCEDURES: Tear osmolarity and Schirmer tear test-1 (STT-1) values were obtained at various times. Normal dogs were assessed for diurnal variation and repeatability and reproducibility of measurements...
October 20, 2016: Veterinary Ophthalmology
Benjamin E Bergstrom, Jean Stiles, Wendy M Townsend
OBJECTIVE: To determine the most common etiologies of panuveitis in a group of dogs, patient response to therapy, and visual outcome. DESIGN: Retrospective study. MATERIALS AND METHODS: Medical records of 55 dogs diagnosed with panuveitis at the Purdue University Veterinary Teaching Hospital between December 2000 and December 2015 were reviewed. Data collected included signalment, season of diagnosis, descriptions of ocular lesions, diagnostic testing, treatment protocols, etiologic diagnoses (when determined), and visual outcome...
October 12, 2016: Veterinary Ophthalmology
Penelope J Wooff, Darryl D Dees, Leandro Teixeria
This case series describes the ocular, clinical and histologic manifestations of disseminated Aspergillosis in two dogs. Two dogs presented for severe unilateral panophthalmitis and secondary glaucoma with positive Aspergillus spp. titers. Case 1 showed no clinicopathologic systemic symptoms of fungal dissemination, however, case 2 was affected with acute renal failure. The affected eye of case 1 did not respond to medical therapy and was enucleated for comfort. The affected eye of case 2 responded to aggressive topical and systemic medical therapies, however, the patient was euthanized for acute renal failure...
September 19, 2016: Veterinary Ophthalmology
Marko Dubicanac, Marine Joly, Julia Strüve, Ingo Nolte, Nadine Mestre-Francés, Jean-Michel Verdier, Elke Zimmermann
OBJECTIVE: The aim of this study was to assess the practicability of common tonometers used in veterinary medicine for rapid intraocular pressure (IOP) screening, to calibrate IOP values gained by the tonometers, and to define a reference IOP value for the healthy eye in a new primate model for aging research, the gray mouse lemur. STUDIED ANIMALS AND PROCEDURES: TonoVet(®) and the TonoPen(™) measurements were calibrated manometrically in healthy enucleated eyes of mouse lemurs euthanized for veterinary reasons...
September 13, 2016: Veterinary Ophthalmology
Nancy Johnstone McLean, Kimberly Newkirk, Coenraad M Adema
OBJECTIVE: To describe the clinical exam findings, treatment and outcomes of 16 dogs diagnosed with ocular onchocerciasis in New Mexico. MATERIALS AND METHODS: Records of dogs diagnosed by the primary author were reviewed (2011-2015). Records that were accessible and included a diagnosis of Onchocerca lupi by histopathologic or molecular identification of the nematode were included. RESULTS: Sixteen cases were included. 3/16 dogs were treated with year-round heartworm prophylaxis prior to infection...
September 13, 2016: Veterinary Ophthalmology
Cornelia Peterson, Elizabeth Driskell, David Wilkie, Christopher Premanandan, Ralph Hamor
OBJECTIVE: Expression of the 70-kDa heat-shock protein (HSP70) has been demonstrated in normal canine corneal epithelium, and inducible expression has been suggested to facilitate wound resolution through organized migration, proliferation, and adhesion of the corneal epithelial cells. Diminished expression of HSP70 may therefore contribute to prolonged healing in the pathologic cornea of other companion animal species, including the horse. ANIMAL STUDIED: Normal and pathologic equine cornea was evaluated to determine whether the expression of HSP70 is correlated with appropriate corneal epithelial wound healing...
September 13, 2016: Veterinary Ophthalmology
Michael J Doughty
OBJECTIVE: To assess the morphological details of the acini of the normal meibomian gland. ANIMALS STUDIED: Six young adult pigmented rabbits. METHODS: The upper eyelid was prepared in extended configuration by glutaraldehyde fixation. Tissue block sections approximately 0.5-1 mm from the eyelid margin were assessed by light microscopy in sagittal sections and transmission electron microscopy (TEM) in coronal sections. TEM images at between 1000× and 2000× magnification were enlarged onto A3-sized prints and cell size and nuclei measured by planimetry...
August 22, 2016: Veterinary Ophthalmology
Kang-Hyo Park, Joon-Young Kim, Seoung-Woo Choo, Hun-Young Yoon, Soon-Wuk Jeong
An Ahmed valve implantation with an Ologen(®) Collagen Matrix (Ologen(®) CM, Aeon Astron, Leiden, the Netherlands) was performed for the treatment of uncontrolled glaucoma in a cat. This cat was a 5-year-old castrated Russian Blue male with a 12-week history of conjunctival hyperemia and mydriasis of the left eye. During the ophthalmic examination, the intraocular pressure (IOP) oculus sinister (OS) was 52 mmHg, and a narrow iridocorneal angle (ICA) was detected by gonioscopy. Medical treatment with Cosopt(®) (2% dorzolamide and 0...
August 19, 2016: Veterinary Ophthalmology
Charlotte Barbé, Nathaniel Harran, Frédéric Goulle
PURPOSE: To determine intra- and interobserver reliability of lens equatorial length measurement using 35-MHz ultrasound biomicroscopy in dogs with cataract. METHODS: Ocular ultrasonography was performed on 28 dogs (50 eyes) before phacoemulsification. Lens equatorial length was measured on still images obtained at 35 MHz in all dogs. Each observer (A and B) obtained the measurements independently. Coefficients of variation (CVs) were used to assess intraobserver repeatability and interobserver reproducibility...
August 13, 2016: Veterinary Ophthalmology
Amanda B Sherman, John M Cullen, Hans D Westermeyer, Carol Grindem, Brian C Gilger
A 3-year-old castrated male mixed-breed dog presented with an acute bullous retinal detachment and thickened choroid of the right eye. Subretinal cytology revealed an atypical cell proliferation suggestive of neoplasia. The eye was enucleated, and the original diagnosis was a histologically benign choroidal melanocytic tumor. Further diagnostics revealed no other systemic abnormalities other than a nonhealing shoulder wound. Six months later, the left eye developed a bullous retinal detachment. This eye responded well to systemic steroids and the dog regained vision within a few weeks of initiating therapy...
August 13, 2016: Veterinary Ophthalmology
Nils Wallin-Håkansson, Karin Berggren
OBJECTIVE: To describe an adaptable method for reconstruction of the orbit following partial orbitectomy. ANIMALS STUDIED: One horse, one cat, and four dogs. PROCEDURE(S): Following partial orbitectomy for removal of bone and soft tissue affected by pathologic processes, reconstruction was achieved. Cerclage wires were used to reconstitute the orbital rim and other salient facial contours involved in excisions. These wires were then covered with a prolene mesh, first inside the orbit and then outwards over the affected extraorbital areas...
August 13, 2016: Veterinary Ophthalmology
Hannah E Visser, Kathryn A Diehl, Richard D Whitley, Kathern E Myrna
OBJECTIVE: To compare Schirmer tear test I (STTI) values collected in normal horses with and without an auriculopalpebral nerve block. PROCEDURE: Schirmer tear test I values were measured in 20 clinically normal horses (38 eyes) with a median age of 12 years. The order of eyes tested was randomized. Within 24-48 h, at the same time of day, tear measurements were collected again after administration of an auriculopalpebral nerve block. Each block was performed a minimum of 5 min prior to each STT I...
August 8, 2016: Veterinary Ophthalmology
Carrie J Finno, Heather J Kaese, Andrew D Miller, Giuliana Gianino, Thomas Divers, Stephanie J Valberg
OBJECTIVE: A pigment retinopathy has been reported in adult horses with equine motor neuron disease (EMND) arising from chronic α-tocopherol (α-TP) deficiency. A pigment retinopathy has not been identified in horses with neuroaxonal dystrophy/equine degenerative myeloencephalopathy (NAD/EDM) that affects genetically susceptible young horses with α-TP deficiency. The objective of this report is to describe, for the first time, a pigment retinopathy in a family of α-TP-deficient Warmbloods (WB) with clinically apparent NAD/EDM or EMND...
August 5, 2016: Veterinary Ophthalmology
Mohamed A Marzok, Adel M Badawy, Sabry A El-Khodery
OBJECTIVE: To determine the normal values and repeatability for Schirmer tear test (STT) in clinically normal dromedary camels and to analyze the influence of the age and gender on these values. ANIMALS STUDIED: Thirty clinically normal dromedary camels of different ages (calves, immature, and mature). PROCEDURES: Schirmer tear tests I and II were performed using commercial STT strips. Three measurements were obtained from each eye over three consecutive weeks, and the variance of these measurements was determined...
August 5, 2016: Veterinary Ophthalmology
Miri Hayashi, Seiya Maehara, Yosuke Ito, Kazuto Yamashita, Akira Kubo, Tetsuya Nakade
OBJECTIVE: To study a new approach to indocyanine green (ICG) angiography for contrasting the ocular fundus in cats. ANIMALS STUDIED: Six healthy laboratory cats. PROCEDURES: Fluorescein (FLUO) and ICG angiography were performed using an infrared-sensitive charged coupled device-equipped fundus camera on sedated cats. RESULTS: At 12.3 ± 3.4 s after ICG administration, the choroidal arteries could be seen extending radially from the optic disk...
August 2, 2016: Veterinary Ophthalmology
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...
August 2, 2016: Veterinary Ophthalmology
Rachael K Lau, Anneke Moresco, Sarah J Woods, Christopher M Reilly, Michelle G Hawkins, Christopher J Murphy, Steven R Hollingsworth, Dennis Hacker, Kate S Freeman
A juvenile to young adult, male, great horned owl (Bubo virginianus,GHOW) was presented to the wildlife rehabilitation hospital at Lindsay Wildlife Museum (WRHLWM) due to trauma to the right patagium from barbed wire entanglement. On presentation, both corneas were irregular, dry, and no movement of the third eyelid was noted. A severe corneal enlargement/globoid appearance was the predominant ophthalmic feature. The fundus was normal in both eyes (OU). Over the course of several days, both corneas developed edema combined with further dessication at the ocular surface associated with diffuse dorsal fluorescein stain uptake...
July 31, 2016: Veterinary Ophthalmology
(no author information available yet)
No abstract text is available yet for this article.
September 2016: Veterinary Ophthalmology
Kate E Hindley, Allyson D Groth, Martyn King, Kathleen Graham, F Mark Billson
OBJECTIVE: To identify clinical characteristics, bacterial isolates, and their antimicrobial susceptibility patterns in a prospective study of dogs presenting with suspected bacterial keratitis to aid selection of appropriate therapy. ANIMALS: Seventy-one client-owned dogs presenting to two referral hospitals in Australia. PROCEDURE: Corneal swabs and clinical information were collected from dogs presenting with suspect bacterial keratitis from April 2012 to December 2014...
September 2016: Veterinary Ophthalmology
Silvia G Pryor, Ellison Bentley, Gillian J McLellan, Elizabeth A Giuliano, Rachel A Allbaugh, Amy J Rankin, Amber L Labelle, Kevin A Buhr
OBJECTIVE: To compare rates of retinal detachment (RD) postphacoemulsification in American Bichon Frises with and without prophylactic retinopexy. PROCEDURES: Medical records of 54 Bichon Frises undergoing phacoemulsification with or without prophylactic retinopexy between 2003 and 2013 in one or both eyes were reviewed from five Midwestern university veterinary teaching hospitals. Inclusion criteria were preoperative ERG, at least 6 months of follow-up postphacoemulsification, and the absence of preexisting RD as determined by ophthalmic examination and/or ultrasound...
September 2016: Veterinary Ophthalmology
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