There are many systemic diseases in dogs that have the potential to cause major changes in the eye due to its hypersensitivity to external factors and conditions. Taking all of this into consideration, the eye has a significant contribution to make to the veterinarian in the diagnosis of systemic diseases in dogs and in the management of these diseases. It is also possible to reach a diagnosis of a systemic disease after ophthalmologic examination in patients brought to the clinic with ocular symptoms. In addition, regular ophthalmic examinations in animals with systemic disease can prevent potential complications and provide an idea of the prognosis of treatment. While there are diseases that cause sudden blindness, such as Sudden Acquired Retinal Degeneration Syndrome and immune-mediated retinitis, there are also eye diseases that develop more slowly due to infectious diseases. Agents such as Brucella canis, Aspergillosis spp., Dirofilaria immitis, Leishmania infantum, Ehrlichia spp., canine distemper virus and canine herpesvirus can cause infectious diseases that may present with ophthalmological findings. Endocrine system disorders (diabetes mellitus, hyperadrenocorticism, hypothyroidism), congenital disorders (EhlersDanlos syndrome, hydrocephalus), various drug toxicities (ivermectin toxicity, anticoagulant rodenticide toxicity) and developmental disorders (ceroid lipofuscinosis and GM1 gangliosidosis) may cause ophthalmological damage. The most common ocular manifestation of these diseases is uveitis. The aim of this review is to provide information on the ophthalmological findings of common systemic diseases and their treatments in dogs.
Keywords: Congenital; developmental; dogs; eye; infectious
Köpeklerde birçok sistemik hastalığın gözde önemli değişimlere sebep olabilme potansiyeli bulunmaktadır. Bunun sebebi, gözün dış faktörlere ve hastalıklara karşı oldukça duyarlı olması ile ilişkilendirilmektedir. Göz, tüm bu özellikler dikkate alındığı zaman, köpeklerde sistemik hastalıkların teşhisinde ve bu durumların tedavilerinin seyrinde veteriner hekimlere önemli katkılar sunmaktadır. Oküler bulgular nedeniyle kliniğe getirilen hastalarda oftalmolojik muayenenin gerçekleştirilmesinin ardından sistemik bir hastalığın teşhisine ulaşabilmek de mümkündür. Ayrıca sistemik bir hastalığı bulunan köpeklerde periyodik göz muayenesi yapılarak oluşabilecek potansiyel komplikasyonlar önlenebilir ve tedavinin prognozu hakkında bilgi sahibi olunabilir. Ani Gelişen Retina Dejenerasyon Sendromu ve immün kaynaklı retinit gibi ani körlükle ortaya çıkan hastalıklar olduğu gibi enfeksiyöz hastalıklara bağlı daha yavaş gelişen göz hastalıkları da vardır. Brucella canis, Aspergillus spp., Dirofilaria immitis, Leishmania infantum, Ehrlichia spp., canine distemper virüs ve canine herpes virüs gibi etkenler oftalmolojik bulgularla seyredebilen enfeksiyöz hastalıklara yol açabilmektedir. Endokrin sistem bozuklukları (diabetes mellitus, hiperadrenokortisizm, hipotiroidizm), kongenital hastalıklar (EhlersDanlos sendromu, hidrosefalus), çeşitli ilaç toksikasyonları (ivermektin toksikasyonu, antikoagülan rodentisit toksikasyonu) ve gelişimsel hastalıklar (seroid lipofusinozis ve GM-1 gangliosidoz) oftalmolojik hasara neden olabilmektedir. Üveit, köpeklerde bu bozuklukların seyri sırasında en fazla gözlenen oftalmolojik bulgudur. Bu derlemede, köpeklerde yaygın olarak görülen sistemik hastalıkların oluşturduğu oftalmolojik bulgular ve bunların sağaltımı hakkında bilgi verilmesi amaçlanmıştır.
Anahtar Kelimeler: Doğumsal; gelişimsel; köpekler; göz; enfeksiyöz
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