Determination of Retinal Abnormality Incidence in Newborn Calves by Fundoscopic Examination in Kars Region

Öz

In the present study, type and incidence of retinal abnormalities occurring in newborn calves (0-3 months) and its possible reasons were evaluated by routine ophthalmic and ophthalmic fundus examination in Kars region. The study was performed in 300 calves with various breeds, age (0-3 months) and sex. In all cases, examination of the fundus of the eye was performed after the midriasis with Atropine. During the fundic examination of optic disc, tapetal and non-tapetal areas and retinal vascularity were evaluated. Normal and abnormal findings were recorded and photographed. Clinical examination showed that 287 of 300 (95.66%) calves were clinically normal, bilateral full blindness were observed in 13 calves (4.33%). Retinal and optic disk problems were present in 9 cases (3%), 4 cases (1.33%) were free of retinal and optic disc problems. Optic disc hypoplasia, retinal degeneration and myelinization (1 case), optic neuritis (1 case), optic disc hypoplasia (2 cases), retinal hemorrhagia due to corioretinitis (1 case), papilledema (1 case), retinal degeneration (1 case), papilledema and retinal degeneration (1 case), optic neuritis and retinal hemorrhagia in one eye, optic neuritis and partial retinal separation were other findings observed in nine case with eyesight problems. In conclusion, in the present study the incidence of eyesight problems that is a significant problem in cattle breeding of our region and normal fundic variation of various cattle breeds were determined. A variety of fundic problems were also determined in animals with sight problems.

Anahtar Kelimeler

• Abnormality,calf,fundoscopic examination,retina

Kars Bölgesinde Yeni Doğan Buzağılarda Retinal Anormalite İnsidensinin Fundoskopik Muayene ile Belirlenmesi

Öz

Bu çalışmada Kars Bölgesinde yeni doğan buzağılarda (0-3 aylık) rutin göz ve göz fundusunun muayenesi yapılarak retinal anormalitelerin tip ve insidensi ile olası nedenlerin değerlendirilmesi amaçlanmıştır. Çalışma materyalini değişik ırk ve cinsiyette 0-3 aylık 300 baş buzağı oluşturdu. Bütün olgularda Atropin ile oluşturulan midriasis sonrası göz fundusunun muayenesi yapıldı. Fundus muayenesinde optik disk, tapetal bölge, nontapetal bölge ve retinal damarlar değerlendirilerek normal ve anormal bulgular not edildi ve fotoğraflama işlemi gerçekleştirildi. Değerlendirmeye alınan 300 baş buzağının 287’sinde (%95,66) klinik olarak herhangi bir problem saptanmazken 13’ünde (%4,33) bilateral tam körlük problemi belirlendi. Bilateral körlük saptanan 9 olguda (%3) retina ve optik disk problemi gözlemlendi, 4 olguda (%1,33) ise retina ve optik diskte herhangi bir anormal bulguya rastlanmadı. Görme problemi olan 9 olgunun 1’inde optik disk hipoplazisi, retinal dejenerasyon ve miyelinizasyon, 1’inde optik neuritis, 2’sinde optik disk hipoplazisi, 1’inde korioretinitise bağlı retinal kanama, 1’inde papilloödem, 1’inde retinal dejenerasyon, 1’inde papilloödem ve retinal dejenerasyon, 1 olguda ise bir gözde optik neuritis ve retinal kanama, diğer gözde de optik neuritis ve parsiyel retinal ayrılma tespit edildi. Bu çalışmayla, bölgemizdeki sığır yetiştiriciliğinde büyük önem taşıyan görme problemlerine ilişkin insidens bilgileri yanında, çeşitli sığır ırklarına ilişkin normal fundus varyasyonları saptandı ve problem saptanan olgularda fundusla ilgili problemlerin çeşitliliği belirlendi.

Anahtar Kelimeler

• Anormalite,buzağı,fundoskopik muayene,retina

Kaynakça

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