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Veterinary Ophthalmology

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https://www.readbyqxmd.com/read/29159852/orbital-invasive-squamous-cell-carcinoma-with-adnexal-involvement-clinically-mimicking-feline-restrictive-orbital-myofibroblastic-sarcoma-19-cases-1990-2016
#1
Kathryn A Diehl, Silvia G Pryor, Leandro Bc Teixeira
OBJECTIVE: To describe the clinical presentations of patients diagnosed with ocular adnexal or orbital squamous cell carcinoma (SCC), which possess features similar to feline restrictive orbital myofibroblastic sarcoma (FROMS). PROCEDURES: A retrospective review of adnexal and/or orbital SCC was performed. Cases were collected from the University of Georgia College of Veterinary Medicine and the Comparative Ocular Pathology Laboratory of Wisconsin (COPLOW) (1990-2016)...
November 21, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29148158/long-term-anesthetic-protocol-in-rats-feasibility-in-electrophysiology-studies-in-visual-prosthesis
#2
Alejandro Barriga-Rivera, Veronica Tatarinoff, Nigel H Lovell, John W Morley, Gregg J Suaning
Electrical stimulation of excitable cells provides therapeutic benefits for a variety of medical conditions, including restoration of partial vision to those blinded via some types of retinal degeneration. To improve visual percepts elicited by the current technology, researchers are conducting acute electrophysiology experiments, mainly in cats. However, the rat can provide a model of a range of retinal diseases and possesses a sufficiently large eye to be used in this field. This article presents a long-term anesthetic protocol to enable electrophysiology experiments to further the development of visual prostheses...
November 17, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29111617/ocular-and-periocular-hemangiosarcoma-in-six-horses
#3
REVIEW
Nicole M Scherrer, Mary Lassaline, Julie Engiles
OBJECTIVE: To determine the characteristics of and prognosis for ocular and periocular hemangiosarcoma in horses. ANIMAL STUDIED: Six horses treated for ocular or periocular hemangiosarcoma. PROCEDURE: A retrospective review of medical records from 2007 to 2015 was performed to identify horses with a histologic diagnosis of ocular or periocular hemangiosarcoma. Signalment (age, sex, breed), duration of clinical signs, prior treatment, tumor size and location, medical and surgical treatment including postoperative chemotherapy, follow-up time, and outcome were obtained from medical records...
November 7, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29111598/comparison-of-corneal-thickness-measurements-using-ultrasound-pachymetry-ultrasound-biomicroscopy-and-digital-caliper-in-frozen-canine-corneas
#4
Seowoo Jeong, Seonmi Kang, Sangwan Park, Eunjin Park, Jaegook Lim, Taekjin Nam, Kangmoon Seo
OBJECTIVE: To evaluate the clinical efficacy among ultrasound pachymetry (UP), ultrasound biomicroscopy (UBM), and manual measurement (MM) with digital caliper by comparing corneal thickness (COT) values obtained from frozen canine corneas ex vivo. PROCEDURES: COT was measured using UP, UBM, and MM in eight enucleated normal canine eyes frozen at -20 °C for 4 weeks. After thawing at room temperature for 2 h, the COT values were obtained from five sites on each cornea: central corneal thickness (CCOT), thickness at the 3, 6, 9, and 12 o'clock positions (3COT, 6COT, 9COT, and 12COT, respectively)...
November 7, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29111596/compliance-between-clinical-and-genetic-diagnosis-of-choroidal-hypoplasia-in-103-norwegian-border-collie-puppies
#5
Siv Grosås, Frode Lingaas, Kristin Wear Prestrud, Ernst-Otto Ropstad
OBJECTIVE: To describe the frequency of the nonhomologous end-joining factor 1 (NHEJ1) mutation and the compliance between clinical and genetic diagnosis of choroidal hypoplasia (CH) in a group of Norwegian Border Collies. ANIMALS STUDIED: Border collie puppies in the age from 5 to 8 weeks. MATERIAL AND METHODS: Puppies included in the study had a complete ophthalmological examination. All findings were recorded, and an ECVO scheme form was issued for each puppy...
November 7, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29111586/an-unusual-case-of-feline-acute-corneal-hydrops-atypical-disease-presentation-and-possible-in%C3%A2-vivo-detection-of-descemet-s-membrane-detachment-in-the-cat-s-unaffected-eye
#6
Brittany N Schlesener, Erin M Scott, Lucien V Vallone
A 1-year-old, female spayed, domestic shorthair cat presented for blepharospasm of the right eye. Slit-lamp biomicroscopic examination showed focal corneal ulceration and presumptive keratomalacia of the right eye. Examination of the left eye was normal apart from a focal endothelial opacity. Within the first 24 h of medical management, the right eye developed marked corneal edema and globular anterior protrusion of the corneal surface consistent with feline acute corneal hydrops (FACH). Surgical management consisted of a bridge conjunctival graft, nictitating membrane flap, and temporary tarsorrhaphy...
November 7, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29111585/tear-ferning-test-in-healthy-dogs
#7
Arianne P Oriá, Ana Claudia S Raposo, Nayone L L C Araújo, Felipe B Lima, Ali M Masmali
PURPOSE: To evaluate and compare three tear sampling methods using two grading scales for administering the tear ferning test (TFT) to healthy dogs. METHODS: In total, 90 dogs (180 eyes) were subjected to tear sampling using millimetered strips, reused after the Schirmer tear test (STT) (Schirmer group, SG). Then, the dogs were subdivided into three groups according to sampling approach: micropipette (MPG), microcapillary (MCG), and Schirmer sample 2 (S2G). The collected tears were dried on a clean microscope glass slide at room temperature and humidity...
November 7, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/29034562/canine-central-corneal-thickness-measurements-via-pentacam-hr-%C3%A2-optical-coherence-tomography-optovue-ivue-%C3%A2-and-high-resolution-ultrasound-biomicroscopy
#8
Allison E Wolfel, Samantha L Pederson, Allison M Cleymaet, Ann M Hess, Kate S Freeman
OBJECTIVE: To compare central corneal thickness (CCT) values in canine eyes using Pentacam-HR(®) Scheimpflug imaging (Pentacam), Optovue(®) iVue spectral-domain optical coherence tomography (SD-OCT), and high-resolution ultrasound biomicroscopy (UBM) and generate normative canine Pentacam CCT values. ANIMALS STUDIED: Twenty-four client-owned dogs (37 eyes) with nondiseased cornea(s) presenting to the Colorado State University Veterinary Teaching Hospital. PROCEDURES: Corneal images were acquired via Pentacam, SD-OCT, and UBM in the listed order...
October 15, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28972684/the-effects-of-topical-aqueous-sirolimus-on-tear-production-in-normal-dogs-and-dogs-with-refractory-dry-eye
#9
Ronald Spatola, Brad Nadelstein, Andrew Berdoulay, Robert V English
PURPOSE: To evaluate the effect of twice daily aqueous 0.02% sirolimus drops on tear production in normal dogs and dogs with refractory keratoconjunctivitis sicca (KCS). METHODS: Two groups of dogs were studied. Ten normal dogs with no signs of ocular disease were administered topical 0.02% sirolimus ophthalmic solution in right eye, and a vehicle control in the left eye twice daily for 4 weeks. Complete ophthalmic examinations, including Schirmer tear test were performed weekly...
October 3, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28972682/presumed-post-traumatic-ocular-chondrosarcoma-with-intrathoracic-metastases-in-a-cat
#10
Matheus V L Moreira, Maria C de Andrade, Gustavo O Fulgêncio, Ingeborg M Langohr, Roselene Ecco
An indoor-only, 5-year-old, spayed female domestic shorthair cat presented for an ophthalmic examination of the left eye. An intraocular tumor with secondary glaucoma and blindness was diagnosed; the globe was enucleated and sent for histopathological examination. Gross examination revealed a solid white mass filling the entire vitreous space and replacing the iris and ciliary body. The lens and retina appeared to be similarly replaced by the neoplasm. Histological examination revealed a complete loss of the internal ocular structures, with a ruptured capsule as the only remnant of the lens within an extensive malignant mesenchymal neoplastic cell proliferation...
October 3, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28952177/electroretinography-is-a-prognostic-indicator-for-postoperative-vision-in-dogs-undergoing-retinal-reattachment-surgery
#11
Allison Hoffman, Steve Sisler, Marie Pappania, Kimberly Hsu, Maya Ross, Ron Ofri
PURPOSE: To determine whether pre-operative electroretinography (ERG) predicts postoperative vision in dogs undergoing retinal reattachment surgery (RRS). METHODS: This 18-month prospective study recorded signalment, duration, cause, and extent of retinal detachment and pre-operative vision status. Rod and mixed rod-cone ERG responses were recorded prior to RRS. Referring veterinary ophthalmologists assessed vision 2 months postoperatively. RESULTS: Thirty dogs (40 affected eyes) aged 4 months to 12...
September 27, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28856832/central-retinal-preservation-in-rdac-cats
#12
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
#13
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
#14
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
#15
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
#16
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/29105975/pigment-retinopathy-in-warmblood-horses-with-equine-degenerative-myeloencephalopathy-and-equine-motor-neuron-disease
#17
(no author information available yet)
No abstract text is available yet for this article.
November 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28150426/reproducibility-and-repeatability-of-optical-coherence-tomography-imaging-of-the-optic-nerve-head-in-normal-beagle-eyes
#18
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...
November 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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