1. The eye of the Barbary sheep or aoudad (Ammotragus lervia): Reference values for selected ophthalmic diagnostic tests, morphologic and biometric observations
- Author
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I.R. de Barros Filho, André Tavares Somma, Bret A. Moore, Fabiano Montiani-Ferreira, and Gabrielle Adad Fornazari
- Subjects
Intraocular pressure ,Biometry ,genetic structures ,040301 veterinary sciences ,Barbary sheep, Biometry, Ocular parameters, Wild caprid ,01 natural sciences ,0403 veterinary science ,biology.animal ,Medicine ,General Veterinary ,biology ,business.industry ,Diagnostic test ,04 agricultural and veterinary sciences ,Anatomy ,Barbary sheep ,Wild caprid ,eye diseases ,Ocular parameters ,0104 chemical sciences ,Corneal diameter ,010404 medicinal & biomolecular chemistry ,Palpebral fissure ,QL1-991 ,Reference values ,Vitreous chamber ,Original Article ,sense organs ,Ultrasonography ,business ,Zoology - Abstract
The purpose of this study was to describe the normal ocular anatomy and establish reference values for ophthalmic tests in the Barbary sheep or aoudad (Ammotragus lervia). Aoudad eyes are large and laterally positioned in the head with several specialized anatomic features attributed to evolutionary adaptations for grazing. Normal values for commonly used ophthalmic tests were established, Schirmer tear test (STT) - 27.22 ± 3.6 mm/min; Predominant ocular surface bacterial microbiota - Staphylococcus sp.; Corneal esthesiometry- 1.3 ± 0.4 cm; Intraocular pressure by rebound tonometry- 19.47 ± 3.9 mmHg; Corneal thickness- 630.07 ± 20.67 μm, B-mode ultrasonography of the globe- axial eye globe length 29.94 ± 0.96 mm, anterior chamber depth 5.03 ± 0.17 mm, lens thickness 9.4 ± 0.33 mm, vitreous chamber depth 14.1 ± 0.53 mm; Corneal diameter- horizontal corneal diameter 25.05 ± 2.18 mm, vertical corneal diameter 17.95 ± 1.68 mm; Horizontal palpebral fissure length- 34.8 ± 3.12 mm. Knowledge of these normal anatomic variations, biometric findings and normal parameters for ocular diagnostic tests may assist veterinary ophthalmologists in the diagnosis of ocular diseases in this and other similar species.Keywords: Barbary sheep, Biometry, Ocular parameters, Wild caprid
- Published
- 2016