Examining the morphometric features of bulbus oculi in Van cats by using computed tomography and magnetic resonance imaging

Abstract

This study was conducted to obtain the morphometric and volumetric measurements of bulbus oculi of Van cats, growing around the city of Van in Turkey and named after here, by using computed tomography (CT) and magnetic resonance imaging (MRI), and to reveal the biometric differences of these measurement values between the sexes. A total of 16 adult Van cats including 8 females and 8 males were used in the study.The animals were anesthetized with the combination of xylazine and ketamine. The anesthetized animals were scanned by using CT and MRI devices and their images were obtained. Then, the morphometric and volumetric measurements of bulbus oculi were calculated from these images using the software (Syngo CT Software) in the workstation and their statistical analysis was performed. Upon the examination of the morphometric and volumetric analysis results, it was determined that while W (bodyweight) and ACL (Left Anterior Chamber) values were higher in male cats, DVLL (Dorsoventral length of the left lens) value was higher in female cats. These differences between the sexes were statistically significant (P<0.05). The volumetric measurement values of bulbus oculi and lens were determined to be averagely 4.60 ± 0.27 cm 3 and 0.67 ± 0.09 cm 3 , respectively.In conclusion, the statistical differences of biometric values of bulbus oculi between male and female Van cats were determined by using CT and MRI. It is thought that the present study would contribute to the ophthalmological applications and the students receiving anatomy education.

Intraocular and Orbital Dimension of the Dog Eye (Canis familiaris)

“…The axial length of the lens was similar to (Salgüero et al, 2015), (Chandrakumar et al, 2019) higher than (Mirshahi et al, 2014), (Vinas et al, 2019), (Kovaļčuka & Mūrniece, 2020), however smaller than (Vosough et al, 2009), (Yilmaz & Durmaz, 2021). Thoroughly indicated this due to differences in species, breed, age, and body weight (Mirshahi et al, 2014).…”

“…Vitreous chamber depth was similar to (Chandrakumar et al, 2019), (Yilmaz & Durmaz, 2021), but smaller than ( Mirshahi et al, 2014), (Salgüero et al, 2015), (Vinas et al, 2019) this may be due to breed difference. Anterior chamber depth was higher than (Cottrill et al, 1989) due to the use of the recoil pad, which avoids the condensation of the cornea and anterior and posterior chamber, however similar to (Salgüero et al, 2015), (Chandrakumar et al, 2019).…”

“…The intraocular parameters, for instance, axial globe length and Equatorial width were similar to (Mirshahi et al, 2014), (Vinas et al, 2019), smaller than (Salgüero et al, 2015), (Chandrakumar et al, 2019), (Kovaļčuka & Mūrniece, 2020), (Yilmaz & Durmaz, 2021), however higher than (Gonçalves et al, 2000) due to variance in breed size and body weight.…”

“…Many publications related to US and MRI of canine ocular structures had been published (Penninck et al, 2001), (Boroffka et al, 2008), (Vosough et al, 2009), (Singh et al, 2015), (Vinas et al, 2019), (Kovaļčuka & Mūrniece, 2020), (Kumawat & Jhirwal, 2021), Anatomy (Yilmaz & Durmaz, 2021), but few CT researches that describe the intraocular parameters and normal appearance within normal eyes (Salgüero et al, 2015), (El-naseery et al, 2016), (Chiwitt et al, 2017), (Lantyer-Araujo et al, 2019), (Chandrakumar et al, 2019). Thus this study aimed to describe the normal CT appearance of domestic dog eye, orbital parameters, described and measured dimensions, and radiodensities of intraocular structures using CT scan within presumed normal dog eye.…”