Bilateral phacoemulsification and intraocular lens implantation in a great horned owl

Carter, Renee T.; Murphy, Christopher J.; Stuhr, Charles M.; Diehl, Kathryn A.

doi:10.2460/javma.230.4.559

Cited by 28 publications

(37 citation statements)

References 6 publications

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“…Electroretinography has only been previously reported in the research setting on two little owls ( Athene noctua ), two tawny owls ( Strix aluco ) and in a clinical case on one great horned owl 11,25,26 . The ERG is the summation of the electrical potentials and currents generated within the cells of the retina and is widely used in veterinary ophthalmology for assessing retinal function 27 .…”

Section: Discussionmentioning

confidence: 99%

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Clinical utility of a complete diagnostic protocol for the ocular evaluation of free‐living raptors

Labelle

Whittington

Breaux

et al. 2011

Veterinary Ophthalmology

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Section: Discussionmentioning

confidence: 99%

“…In one study from Minnesota, lesions in the posterior portion of the eye were present in 100% of West Nile Virus positive hawks 10 . Sporadic case reports describe acquired ocular disease of free‐living raptors 11–14 . Thorough ophthalmic evaluation of raptor patients is generally considered standard of care 3…”

Section: Introductionmentioning

confidence: 99%

Clinical utility of a complete diagnostic protocol for the ocular evaluation of free‐living raptors

Labelle

Whittington

Breaux

et al. 2011

Veterinary Ophthalmology

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“…Son yıllarda genellikle yaban hayvanlarının yasal olmayan yollarla avlanması ya da yaralanması gibi vakaların hızla artması şahin gibi doğal yaşam ortamının parçası olan kanatlıların veteriner kliniklerine daha sık gelmelerine neden olmaktadır. Nitekim son yıllarda aralarında uzun boynuzlu baykuş, mersin balığı, gri taçlı turna ve muhabbet kuşu gibi doğal yaşama ait türlerde intra ve ekstraokuler cerrahi uygulamaların yapıldığı bildirilmektedir (2,8,28). Bu çalışma ile falconiformes (gündüz yırtıcı kuşları) takımının falconidae (doğanlar) familyasına ait bir tür olan şahinin (buteo buteo) göz kaslarının en, boy, uzunluk ve kasların bulbus oculi'ye tutundukları noktada limbus cornea'ya olan uzaklıkları morfometrik olarak değerlendirilerek sonlanma tendolarının makroskobik özellikleri ile sclera'ya bağlanma şekilleri açıklandı.…”

Section: Tartışma Ve Sonuçunclassified

Şahinde (buteo buteo) bulbus oculi ve intraorbital kasların (musculi bulbi) morfolojik incelenmesi

Erdem;ONUK¹

2011

Ankara Üniversitesi Veteriner Fakültesi Dergisi

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Özet: Yapılan bu çalışmada erişkin 10 adet şahine (Buteo buteo) ait toplam 20 adet bulbus oculi kullanıldı. Bulbus oculi ve lens'e ait morfometrik veriler tanımlandı, sağ ve sol göze ait değerler "Eşleştirilmiş İki Grup Arasındaki Farkların Testi" ile değerlendirildi ve güven aralığında yapılan test sonuçlarına göre anlamlı bir fark bulunmadı (p≥0,05). Sclera'nın histolojik incelemesinde equator bölgesinde ossiculorum sclerae olarak tanımlanan kemik plakalar gözlendi. Kemik plakaların içerisinde sinuzoidal boşluklar tanımlandı. Bu kemik plakların alt kısmında kendisinden bağ doku ile ayrılan içerisinde kondrosit ve kondroblastların bulunduğu kıkırdak bir doku gözlendi. Bulbus oculi'nin hareketinden sorumlu olan intraorbital kaslar; m. rectus dorsalis, m. rectus ventralis, m. rectus nasalis, m. rectus temporalis, m. obliquus dorsalis ve m. obliquus ventralis'ten oluşmaktaydı. Ayrıca, bulbus oculi'den orijin alarak membrana nictitans'a bağlanan m. pyramidalis membrana nictitantis ve m. quadratus membrana nictitantis belirlendi. Düz seyirli kaslar ile m. obliquus ventralis'in for. opticum'un çevresinden, m. obliquus dorsalis'in ise septum interorbitale'nin nasal kısmından köken alarak sclera'ya bağlandığı belirlendi. M. pyramidalis membrana nictitantis ve m. quadratus membrana nictitantis'in ise sclera üzerine bağlanarak, tendo pyramidalis ile membrana nictitans'ı hareket ettirdiği belirlendi. Göz kaslarının morfometrik verileri ve sclera'ya tutunan bağlanma tendolarının şekli tanımlandı.Anahtar sözcükler: Bulbus oculi, göz kasları, sclera, şahin. Morphological examination of the bulbus oculi and intraorbital muscles (musculi bulbi) in the common buzzard (buteo buteo)Summary: In this study, a total of 20 eyeballs belong to 10 adult buzzards (buteo buteo) were examined. Morphometric data of eyeballs and lens were described and value of right and left eyes were evaluated with "paired sample t-test" and significant difference was not found (p≥0.05). Bony plates described as scleral ossicles were observed in equator region of sclera in histological investigation. Sinusoidal cavities were noticed in bony plates. A cartilage containing chondrocytes and chondroblasts in it in lower part of these bony plates were seen. Intraorbital muscles, dorsal rectus, ventral rectus, nasal rectus, temporal rectus, dorsal oblique and ventral oblique were responsible for the movement of bulbus oculi. Also, pyramidalis and quadratus muscles that originated from bulbus oculi and attached to nictitating membrane were determined. It was detected that rectus muscles and ventral oblique muscle originated from the surrounding of optic foramen and dorsal oblique muscle originated from nasal part of interorbital septum and attached to sclera. Pyramidalis and quadratus muscles were stated to be attached to sclera and to responsible for the movement of nictitating membrane. Morphometric data and junction formation of the insertion tendon of intraorbital muscle to the sclera were identified.

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“…5,6,9,10,12,18,20,21,23,27,35 The majority of cataracts identified in these avian orders were found postmortem. 20 Hypothesized causes of cataracts in birds include genetic predispositions, age-related oxidative stress, radiation exposure, trauma, developmental malformations, nutritional disorders, and infectious diseases.…”

Section: Introductionmentioning

confidence: 96%

Retrospective Investigation of Cataract Management in Avian Species in a Zoologic Collection

Rainwater¹,

Sykes²,

Sapienza³

2015

Journal of Zoo and Wildlife Medicine

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A review of avian cataracts at the Wildlife Conservation Society's Bronx Zoo between 1992 and 2011 was conducted. Ninety cataracts in 54 birds from 42 species were identified. Cataracts were found primarily during examination for ocular abnormalities (29/54, 53.7%) or opportunistically (13/54, 24.1%) and were most commonly diagnosed as mature (22/90, 24.4%). Systemic medical conditions diagnosed in these birds included West Nile virus (4/54, 7.4%), head trauma (3/54, 5.6%), plumbism and Salmonella Pullorum (1/54, 1.9%), Marek's disease (1/54, 1.9%), leukocytosis (1/54, 1.9%), and hyperglycemia (1/54, 1.9%). Cataracts were progressive in seven birds of four species. Unilateral enucleation was performed in 2/54 (3.7%) birds, and 12/54 (22.2%) underwent cataract removal (phacoemulsification in 16 eyes and standard extracapsular cataract extraction in 2 eyes). Concurrent ocular abnormalities, such as corneal scarring and lens-induced uveitis, were seen in 2/18 (11.1%) eyes preoperatively in the group undergoing cataract removal, 2/2 (100%) eyes preoperatively in the group undergoing enucleation, and 33/70 (47.1%) of eyes that did not undergo surgery. For birds undergoing cataract removal, complications included successfully treated cardiorespiratory arrest intraoperatively (1/12, 8.3%) as well as postanesthetic complications of acute respiratory distress and tracheal stricture (2/12, 16.7%). The most common postoperative ocular abnormalities included posterior capsular opacity (4/18 eyes, 22.2%) and corneal scarring (2/18 eyes, 11.1%). Lens cortical regrowth and marked posterior lens capsular opacity occurred in one eye of one bird after phacoemulsification, necessitating a second ocular surgery. A successful outcome, as determined by improved postoperative visual acuity, was seen in 10/12 (83.3%) birds undergoing cataract removal, and 5/12 (41.7%) of these birds were alive >3 yr after surgery. The results of this review will aid clinicians in identifying common stages of cataracts, determining eligibility for cataract surgery, and managing postoperative complications in avian patients.

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Bilateral phacoemulsification and intraocular lens implantation in a great horned owl

Abstract: In raptors with substantial visual compromise, euthanasia or placement in a teaching facility is a typical outcome because release of such a bird is unacceptable. Successful intraocular lens implantation for visual rehabilitation and successful release into the wild are achievable.

Cited by 28 publications

References 6 publications

Clinical utility of a complete diagnostic protocol for the ocular evaluation of free‐living raptors

Clinical utility of a complete diagnostic protocol for the ocular evaluation of free‐living raptors

Şahinde (buteo buteo) bulbus oculi ve intraorbital kasların (musculi bulbi) morfolojik incelenmesi

Retrospective Investigation of Cataract Management in Avian Species in a Zoologic Collection

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