E-ISSN 2218-6050 | ISSN 2226-4485
 

Original Article


The eye of the Barbary sheep or aoudad (Ammotragus lervia): reference values for selected ophthalmic diagnostic tests, morphologic and biometric observations

G.A. Fornazari, F. Montiani-Ferreira, I.R. de Barros Filho, A.T. Somma, B. Moore.

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.

Key words: Barbary sheep, Biometry, Ocular parameters, Wild caprid


 
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How to Cite this Article
Pubmed Style

G.A. Fornazari, F. Montiani-Ferreira, I.R. de Barros Filho, A.T. Somma, B. Moore. The eye of the Barbary sheep or aoudad (Ammotragus lervia): reference values for selected ophthalmic diagnostic tests, morphologic and biometric observations. Open Vet J. 2016; 6(2): 102-113. doi:10.4314/ovj.v6i2.6


Web Style

G.A. Fornazari, F. Montiani-Ferreira, I.R. de Barros Filho, A.T. Somma, B. Moore. The eye of the Barbary sheep or aoudad (Ammotragus lervia): reference values for selected ophthalmic diagnostic tests, morphologic and biometric observations. https://www.openveterinaryjournal.com/?mno=268427 [Access: February 05, 2023]. doi:10.4314/ovj.v6i2.6


AMA (American Medical Association) Style

G.A. Fornazari, F. Montiani-Ferreira, I.R. de Barros Filho, A.T. Somma, B. Moore. The eye of the Barbary sheep or aoudad (Ammotragus lervia): reference values for selected ophthalmic diagnostic tests, morphologic and biometric observations. Open Vet J. 2016; 6(2): 102-113. doi:10.4314/ovj.v6i2.6



Vancouver/ICMJE Style

G.A. Fornazari, F. Montiani-Ferreira, I.R. de Barros Filho, A.T. Somma, B. Moore. The eye of the Barbary sheep or aoudad (Ammotragus lervia): reference values for selected ophthalmic diagnostic tests, morphologic and biometric observations. Open Vet J. (2016), [cited February 05, 2023]; 6(2): 102-113. doi:10.4314/ovj.v6i2.6



Harvard Style

G.A. Fornazari, F. Montiani-Ferreira, I.R. de Barros Filho, A.T. Somma, B. Moore (2016) The eye of the Barbary sheep or aoudad (Ammotragus lervia): reference values for selected ophthalmic diagnostic tests, morphologic and biometric observations. Open Vet J, 6 (2), 102-113. doi:10.4314/ovj.v6i2.6



Turabian Style

G.A. Fornazari, F. Montiani-Ferreira, I.R. de Barros Filho, A.T. Somma, B. Moore. 2016. The eye of the Barbary sheep or aoudad (Ammotragus lervia): reference values for selected ophthalmic diagnostic tests, morphologic and biometric observations. Open Veterinary Journal, 6 (2), 102-113. doi:10.4314/ovj.v6i2.6



Chicago Style

G.A. Fornazari, F. Montiani-Ferreira, I.R. de Barros Filho, A.T. Somma, B. Moore. "The eye of the Barbary sheep or aoudad (Ammotragus lervia): reference values for selected ophthalmic diagnostic tests, morphologic and biometric observations." Open Veterinary Journal 6 (2016), 102-113. doi:10.4314/ovj.v6i2.6



MLA (The Modern Language Association) Style

G.A. Fornazari, F. Montiani-Ferreira, I.R. de Barros Filho, A.T. Somma, B. Moore. "The eye of the Barbary sheep or aoudad (Ammotragus lervia): reference values for selected ophthalmic diagnostic tests, morphologic and biometric observations." Open Veterinary Journal 6.2 (2016), 102-113. Print. doi:10.4314/ovj.v6i2.6



APA (American Psychological Association) Style

G.A. Fornazari, F. Montiani-Ferreira, I.R. de Barros Filho, A.T. Somma, B. Moore (2016) The eye of the Barbary sheep or aoudad (Ammotragus lervia): reference values for selected ophthalmic diagnostic tests, morphologic and biometric observations. Open Veterinary Journal, 6 (2), 102-113. doi:10.4314/ovj.v6i2.6