Ocular biometry of snakes of the species Python bivittatus kept in captivity
During embryological development, the eyelids of snakes fuse and no longer open like in mammals. They become transparent, thus forming spectacles, a transparent structure that covers the eyes. The primary function of these spectacles is to provide a physical barrier to protect the eyes without eyel...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Universidade de São Paulo
2023-12-01
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| Series: | Brazilian Journal of Veterinary Research and Animal Science |
| Subjects: | |
| Online Access: | https://www.revistas.usp.br/bjvras/article/view/213344 |
| _version_ | 1797393416706850816 |
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| author | Inghrid Caroline Coutinho Agostinho Jessica Amancio Martins Melina Castilho Souza Balbueno Cidéli de Paula Coelho Raul Martins Júnior |
| author_facet | Inghrid Caroline Coutinho Agostinho Jessica Amancio Martins Melina Castilho Souza Balbueno Cidéli de Paula Coelho Raul Martins Júnior |
| author_sort | Inghrid Caroline Coutinho Agostinho |
| collection | DOAJ |
| description |
During embryological development, the eyelids of snakes fuse and no longer open like in mammals. They become transparent, thus forming spectacles, a transparent structure that covers the eyes. The primary function of these spectacles is to provide a physical barrier to protect the eyes without eyelids. This study aimed to evaluate the ocular biometry of Python bivittatus snakes. Ocular ultrasound examinations were performed on four individuals using the Logic E ultrasound device (GE, United States) with a 10-22 MHz linear probe. Conduction gel was used to make transducer contact with the cornea in these snakes. Images were obtained to evaluate the following measurements: axial length of the eyeball, anterior chamber depth, lens thickness, and vitreous depth. These measurements of intraocular structures were, respectively: 0.05 ± 0.02 cm for corneal thickness in the right eye and 0.04 ± 0.007 cm in the left eye; 0.11 ± 0.04 cm for anterior chamber depth in the right and left eyes; 0.36 ± 0.07 cm for the lens thickness in the right eye and 0.39 ± 0.05 cm in the left eye; 0.35 ± 0.05 for the depth of the vitreous chamber in the right eye and 0.31 ± 0.02 cm in the left eye; and 0.85 ± 0.18 cm for the length of the globe in the axial plane in the right eye and 0.85 ± 0.14 cm in the left eye. Knowledge of snakes’ anatomical and ophthalmological parameters is scarce, and the incidence of eye diseases is still little known, making further studies necessary.
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| first_indexed | 2024-03-09T00:02:18Z |
| format | Article |
| id | doaj.art-ae1ebc53155747f48c01e2c2ac1b6580 |
| institution | Directory Open Access Journal |
| issn | 1413-9596 1678-4456 |
| language | English |
| last_indexed | 2024-03-09T00:02:18Z |
| publishDate | 2023-12-01 |
| publisher | Universidade de São Paulo |
| record_format | Article |
| series | Brazilian Journal of Veterinary Research and Animal Science |
| spelling | doaj.art-ae1ebc53155747f48c01e2c2ac1b65802023-12-12T16:14:59ZengUniversidade de São PauloBrazilian Journal of Veterinary Research and Animal Science1413-95961678-44562023-12-0160Ocular biometry of snakes of the species Python bivittatus kept in captivityInghrid Caroline Coutinho Agostinho0Jessica Amancio Martins1Melina Castilho Souza Balbueno2Cidéli de Paula Coelho3Raul Martins Júnior4Faculdade Método de São Paulo, São José dos Campos – SP, BrazilUniversidade de Santo Amaro, São Paulo – SP, BrazilUniversidade de Santo Amaro, São Paulo – SP, BrazilUniversidade de Santo Amaro, São Paulo – SP, BrazilFaculdade Método de São Paulo, São José dos Campos – SP, Brazil During embryological development, the eyelids of snakes fuse and no longer open like in mammals. They become transparent, thus forming spectacles, a transparent structure that covers the eyes. The primary function of these spectacles is to provide a physical barrier to protect the eyes without eyelids. This study aimed to evaluate the ocular biometry of Python bivittatus snakes. Ocular ultrasound examinations were performed on four individuals using the Logic E ultrasound device (GE, United States) with a 10-22 MHz linear probe. Conduction gel was used to make transducer contact with the cornea in these snakes. Images were obtained to evaluate the following measurements: axial length of the eyeball, anterior chamber depth, lens thickness, and vitreous depth. These measurements of intraocular structures were, respectively: 0.05 ± 0.02 cm for corneal thickness in the right eye and 0.04 ± 0.007 cm in the left eye; 0.11 ± 0.04 cm for anterior chamber depth in the right and left eyes; 0.36 ± 0.07 cm for the lens thickness in the right eye and 0.39 ± 0.05 cm in the left eye; 0.35 ± 0.05 for the depth of the vitreous chamber in the right eye and 0.31 ± 0.02 cm in the left eye; and 0.85 ± 0.18 cm for the length of the globe in the axial plane in the right eye and 0.85 ± 0.14 cm in the left eye. Knowledge of snakes’ anatomical and ophthalmological parameters is scarce, and the incidence of eye diseases is still little known, making further studies necessary. https://www.revistas.usp.br/bjvras/article/view/213344OphthalmologyUltrasoundDiagnostic imaging |
| spellingShingle | Inghrid Caroline Coutinho Agostinho Jessica Amancio Martins Melina Castilho Souza Balbueno Cidéli de Paula Coelho Raul Martins Júnior Ocular biometry of snakes of the species Python bivittatus kept in captivity Brazilian Journal of Veterinary Research and Animal Science Ophthalmology Ultrasound Diagnostic imaging |
| title | Ocular biometry of snakes of the species Python bivittatus kept in captivity |
| title_full | Ocular biometry of snakes of the species Python bivittatus kept in captivity |
| title_fullStr | Ocular biometry of snakes of the species Python bivittatus kept in captivity |
| title_full_unstemmed | Ocular biometry of snakes of the species Python bivittatus kept in captivity |
| title_short | Ocular biometry of snakes of the species Python bivittatus kept in captivity |
| title_sort | ocular biometry of snakes of the species python bivittatus kept in captivity |
| topic | Ophthalmology Ultrasound Diagnostic imaging |
| url | https://www.revistas.usp.br/bjvras/article/view/213344 |
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