Ultrasonographic measurements of the Bulbous oculi of the camel

Ultrasonographic measurements of the Bulbous oculi of the camel

Ophthalmic ultrasonography is considered a useful modern tool to quantify the ocular dimensions. The main aim of this study was to give information about the ultrasonographic measurements of the normal hybrid camel eye. Besides, to calculate some indices of the camel eye and discuss them in comparison with the ocular measurements of other animals reported previously. Fourteen formalin-preserved eyeballs were subjected to corneal ocular ultrasonographic examination in horizontal imaging plane. The ultrasonographic results of the eyeballs showed 95% confidence intervals for measurements as Cornel length (CL) (1.56-1.87), anterior chamber depth (ACD) (2.33-4.27), lens thickness (LT) (6.81-10.00), vitreous chamber depth (VCD) (23.01-24.44), axial length (AL) (35.13-38.60), Optical axis (OA) (34.89-37.24). Indices also showed that 95% confidence interval ranges were as CL/AL (0.04-0.05), ACD/AL (0.06-0.11), LT/AL (0.19-0.26), VCD/AL (0.62-0.66) and OA/AL (0.96-1.00). This knowledge of the normal ocular dimensions will especially be helpful in the diagnosis of the deviation from normal eye and progression towards any ocular problem in the hybrid camel.

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  • Cartee, R., Brosemer, K., & Ridgway, S. (1995). The Eye of the Bottlenose Dolphin (Tursiops truncatus) Evaluated by B Mode Ultrasonography. Journal of Zoo and Wildlife Medicine, 26(3), 414-421. Retrieved April 7, 2021, from http://www.jstor.org/stable/20095500
  • Debert, I., Polati, M., Jesus, D. L., Souza, E. C., & Alves, M. R. (2012). Biometric relationships of ocular components in esotropic amblyopia. Arquivos brasileiros de oftalmologia, 75(1), 38–42.
  • Dudea S. M. (2011). Ultrasonography of the eye and orbit. Medical ultrasonography, 13(2), 171–174.
  • Gialletti, R., Marchegiani, A., Valeriani, T., Nannarone, S., Beccati, F., Fruganti, A., & Laus, F. (2018). A survey of ocular ultrasound abnormalities in horse: 145 cases. Journal of ultrasound, 21(1), 53–59. https://doi.org/10.1007/s40477-018-0284-7
  • Hashemi, H., Khabazkhoob, M., Miraftab, M., Emamian, M. H., Shariati, M., Abdolahinia, T., & Fotouhi, A. (2012). The distribution of axial length, anterior chamber depth, lens thickness, and vitreous chamber depth in an adult population of Shahroud, Iran. BMC ophthalmology, 12, 50. https://doi.org/10.1186/1471-2415-12-50
  • Holladay, J. T. (2009). Ultrasound and optical biometry. Cataract & Refractive Surgery Today Europe, 18-19.
  • Kara, M. E., Sevil Kilimci, F., Yildirim, I. G., Onar, V., & Pazvant, G. (2011). The intercondylar fossa indices of male and female dog femora. Veterinary and comparative orthopaedics and traumatology : V.C.O.T, 24(3), 211–214. https://doi.org/10.3415/VCOT-10-04-0058
  • Kassab, A. (2012). Ultrasonographic and macroscopic anatomy of the enucleated eyes of the buffalo (Bos bubalis) and the one‐humped camel (Camelus dromedarius) of different ages. Anatomia, histologia, embryologia, 41(1), 7-11.
  • Kelawala, D., Patil, D., Parikh, P., Sini, K., Parulekar, E., Amin, N., Ratnu D. A. Rajput, P.K. (2015). Normal Ocular Ultrasonographic Biometry and Fundus Imaging of Indian Camel (Camelus dromedarius). Journal of Camel Practice and Research, 22(2), 181-185. https://doi.org/10.5958/2277-8934.2015.00028.4
  • Lehmkuhl, R. C., Almeida, M. F., Mamprim, M. J., & Vulcano, L. C. (2010). B-mode ultrasonography biometry of the Amazon Parrot (Amazona aestiva) eye. Veterinary ophthalmology, 13 Suppl, 26–28. https://doi.org/10.1111/j.1463-5224.2010.00797.x
  • Mirshahi, A., Shafigh, S. H., & Azizzadeh, M. (2014). Ultrasonographic biometry of the normal eye of the Persian cat. Australian veterinary journal, 92(7), 246–249. https://doi.org/10.1111/avj.12189
  • Osuobeni, E. P., & Hamidzada, W. A. (1999). Ultrasonographic determination of the dimensions of ocular components in enucleated eyes of the one-humped camel (Camelus dromedarius). Research in veterinary science, 67(2), 125–129. https://doi.org/10.1053/rvsc.1998.0288
  • Potter, T. J., Hallowell, G. D., & Bowen, I. M. (2008). Ultrasonographic anatomy of the bovine eye. Veterinary radiology & ultrasound : the official journal of the American College of Veterinary Radiology and the International Veterinary Radiology Association, 49(2), 172–175. https://doi.org/10.1111/j.1740-8261.2008.00345.x
  • Quan-hao, B., Jun-li, W., Qing-qiang, W., Qi-chang, Y., & Jin-song, Z. (2007). The measurement of anterior chamber depth and axial length with the IOLMaster compared with contact ultrasonic axial scan. International Eye Science, 7(4), 921-924.
  • Ribeiro, A. P., Silva, M. L., Rosa, J. P., Souza, S. F., Teixeira, I. A., & Laus, J. L. (2009). Ultrasonographic and echobiometric findings in the eyes of Saanen goats of different ages. Veterinary ophthalmology, 12(5), 313–317. https://doi.org/10.1111/j.1463-5224.2009.00719.x
  • Sorouri, S., Masoudifard, M., Raoufi, A., & Aghazadeh, M. (2009). Ultrasonographic findings of some ocular structures in Caspian miniature horse. https://doi.org /10.22099/IJVR.2009.1716
  • Tran, H., Jan, N. J., Hu, D., Voorhees, A., Schuman, J. S., Smith, M. A., Wollstein, G., & Sigal, I. A. (2017). Formalin Fixation and Cryosectioning Cause Only Minimal Changes in Shape or Size of Ocular Tissues. Scientific reports, 7(1), 12065. https://doi.org/10.1038/s41598-017-12006-1
  • Yadegari, M., Salehi, A., Ashtari, A., & Ashtari, M. (2013). B-mode Ultrasound Biometry of Intraocular Structures in Dromedary Camels (Camelus dromedarius).