# Computed Tomographic Assessment of Normal Ocular Dimensions and Densities in Cadaveric Horses (Equus ferus caballus)

## TL;DR

This study uses CT scans to measure normal eye structures in cadaveric horses and finds subtle links between skull and eye anatomy.

## Contribution

The study provides novel CT-based ocular measurements and identifies anatomical relationships in equine eyes.

## Key findings

- Computed tomography reveals detailed equine ocular dimensions and tissue densities.
- Weak correlations exist between cranial and ocular parameters, with notable associations involving lens and anterior chamber measurements.

## Abstract

Modern diagnostic imaging techniques, particularly computed tomography (CT), offer valuable information on clinically relevant head structures, including the eyeball, owing to their rapid image acquisition, high spatial resolution, and elimination of superimposed tissues. Comprehensive knowledge of equine ocular dimensions and tissue densities is essential for clinicians and researchers to better understand the biology of the equine eye and its visual capabilities.

This study aimed to characterize the computed tomographic (CT) dimensions and contrast attenuation properties of the equine eye. CT scans from 21 horses without ocular abnormalities were analyzed to obtain detailed ocular measurements and attenuation values. In addition, cranial measurements, such as nasal–occipital length and zygomatic width, were incorporated to explore potential anatomical relationships between the skull and intraocular structures. Although most correlations between cranial and ocular parameters were weak, statistically significant associations—particularly those involving lens dimensions and anterior chamber measurements—suggest that skull morphology may exert a subtle influence on ocular anatomy.