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Published on: July 24, 2020
The chinchilla eye: morphologic observations, echobiometric findings and reference values for selected ophthalmic
Leandro Lima1, Fabaino Montiani-Ferreira, Mariana Tramontin
1Universidade Federal do Paraná (UFPR), Departamento de Medicina Veterinária, Rua dos Funcionários, 1540, 80035-050, Curitiba - PR, Brazil.
Veterinary Ophthalmology
|September 16, 2010
Summary
This study establishes normal ophthalmic parameters for chinchilla eyes, providing crucial reference data for veterinary diagnostics. Findings aid in recognizing unique features and diagnosing ocular diseases in this animal model.
Area of Science:
- Veterinary Ophthalmology
- Comparative Anatomy
- Animal Models
Background:
- Chinchillas are increasingly used as biological models in ophthalmic research.
- Establishing species-specific normal physiological and anatomical data is essential for accurate disease diagnosis.
Purpose of the Study:
- To describe key morphological features of the chinchilla eye and bony orbit.
- To determine normal reference values for selected ophthalmic diagnostic tests in chinchillas.
Main Methods:
- Morphological examination of formalin-fixed globes and macerated skulls.
- Ocular diagnostic tests including blink frequency, palpebral fissure length (PFL), Schirmer tear test (STT), esthesiometry, intraocular pressure (IOP), and central corneal thickness (CCT).
- B-mode echobiometry for globe measurements and conjunctival bacterial culture.
Main Results:
- Normal ranges were established for blink frequency, STT, esthesiometry, IOP, CCT, PFL, anterior chamber depth, axial lens thickness, vitreous chamber depth, and axial globe length.
- The most common conjunctival bacteria identified were Streptococcus sp., Staphylococcus aureus, and coagulase-negative Staphylococcus.
- No significant differences were observed between left/right eyes or genders.
Conclusions:
- The study provides essential reference data for chinchilla ocular anatomy and physiology.
- These findings will assist veterinary ophthalmologists in diagnosing ocular conditions in chinchillas.
- The data supports the use of chinchillas as a model for ophthalmic studies.
