Int.J.Curr.Microbiol.App.Sci (2021) 10(08): 188-193 188 Original Research Article https://doi.org/10.20546/ijcmas.2021.1008.023 Ultrasonographic Ocular Biometry for the Diagnosis of Ophthalmic Disorders in Dogs B. Lavanya * , Syam K. Venugopal, K. D. John Martin, Soumya Ramankutty and A. R. Sreeranjini Department of Veterinary Surgery and Radiology, College of Veterinary and Animal Sciences, Kerala Veterinary and Animal Sciences University, Mannuthy- 680651, India *Corresponding author ABSTRACT Introduction Eye is the most unique organ in the body with respect to its anatomical position and orientation. Vision plays a major role in a dog’s life as it affects its ability to engage in high performance, visually orientated activities, such as guiding the blind, police work, obedience tests, racing, and hunting (Miller and Murphy, 1995). Hence it is essential to diagnose any ocular pathologies in dogs as early as possible as it affects the behavior of the animal as well. In conditions where posterior segment of the eye is obscured due to the presence of pathologies in the anterior chamber, B-mode ultrasonography International Journal of Current Microbiology and Applied Sciences ISSN: 2319-7706 Volume 10 Number 08 (2021) Journal homepage: http://www.ijcmas.com The study was aimed to perform B-mode ocular ultrasonography in the dogs to evaluate intraocular structures. 75 dogs irrespective of the age, breed and sex that were presented during the period of August 2019 to December 2020 to University Veterinary Hospitals at Mannuthy and Kokkalai. Among the 75 dogs, 55 dogs were presented with various ocular affections and 20 dogs with clinically normal eyes subjected to the comparative study. Of the 55 dogs, biometry for various ocular parameters were recorded in 50 dogs. All the dogs were subjected to routine clinical and ophthalmic examinations. B-mode scan was performed with manual restraint. Corneal desensitization was achieved by using topical anesthetic, 0.5% proparacaine hydrochloride. Biometry for ocular parameters like axial length of the eye (D1), vitreous chamber depth (D2), lens diameter (D3) and lens depth (D4) were recorded in all the dogs which differed significantly within the same group and between groups and between normal eyes and affected eyes. Various pathological lesions were diagnosed and imaged in rest of the five dogs whose ocular biometry was not included in the current study. Keywords B-mode ocular ultrasonography, posterior segment, dog, ocular biometry Accepted: 12 July 2021 Available Online: 10 August 2021 Article Info