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The crested caracara ( Caracara plancus ) eye: Morphologic observations and results of selected diagnostic tests
- Source :
- Veterinary Ophthalmology. 24:533-542
- Publication Year :
- 2021
- Publisher :
- Wiley, 2021.
-
Abstract
- PURPOSE To provide a descriptive investigation about relevant features of the crested caracara's eye (Caracara plancus) and bony orbit, as well as provide data for ophthalmic tests. METHODS Morphological observations and the following diagnostic tests were performed: Schirmer tear test (STT), conjunctival flora evaluation, corneal touch threshold (CTT), intraocular pressure (IOP), central corneal thickness (CCT), B-mode ocular biometry, palpebral fissure length (PFL), and corneal diameter (CD) in 19 healthy birds, plus two macerated skulls. Not all birds were used for each test. RESULTS STT: 7.84 ± 3.05 mm/min; CTT: 2.46 ± 1.10 cm; IOP: 19.18 ± 3.07 mmHg; CCT: 0.31 ± 0.02 mm; PFL: 13.32 ± 1.06 mm; CD: 10.26 ± 2.43 mm; Axial globe length: 1.89 ± 0.06 cm; Anterior chamber depth: 0.27 ± 0.06 cm; Lens axial length: 4.55 ± 0.06 cm; Vitreous chamber depth: 1.2 ± 0.07 cm. The most frequent conjunctival bacterial isolates were Corynebacterium sp. (10/23.8%), Staphylococcus sp. (9/21.42%), Streptococcus sp. (7/16.6%), and E. coli (7/16.66%). The large lateral part of the palatine bone likely plays a role in the ventral protection of the globe against the impact of prey. Observed results are generally reflective of increased body mass compared to other Falconiformes, with values approaching those of similar sized Accipitriformes. CONCLUSIONS These data may help veterinarians recognize peculiar morphologic features and perform a more accurate diagnosis of eye diseases of this avian species.
- Subjects :
- Male
Intraocular pressure
medicine.medical_specialty
Eye Diseases
genetic structures
Corneal Touch
Diagnostic Techniques, Ophthalmological
Eye
Crested caracara
Caracara
Cornea
Ophthalmology
medicine
Animals
Ocular Physiological Phenomena
Falconiformes
Palatine bone
General Veterinary
biology
biology.organism_classification
eye diseases
medicine.anatomical_structure
Palpebral fissure
Tears
Vitreous chamber
Accipitriformes
Female
sense organs
Orbit
Subjects
Details
- ISSN :
- 14635224 and 14635216
- Volume :
- 24
- Database :
- OpenAIRE
- Journal :
- Veterinary Ophthalmology
- Accession number :
- edsair.doi.dedup.....f8f1f126f658a91a9141d37064408d68