Equine vision

Reconstruction of a Complicated Orbital Depression Fracture with Medial Wall and Globe Repositioning in a Horse: A Collaboration Across Disciplines and Specialties

“…Orbital disorders that cause limitations in globe mobility or orientation can cause diplopia (double vision). Understandably, this can have a negative impact on performance; however, this condition is often difficult to assess in horses . Multiple techniques were used to reduce fractures present in this case.…”

“…Understandably, this can have a negative impact on performance; however, this condition is often difficult to assess in horses. 10 Multiple techniques were used to reduce fractures present in this case. The majority of the depressed fracture fragments could be easily elevated with a bone hook and remained in place without additional support needed.…”

A multicentre study of long‐term follow‐up and owner satisfaction following enucleation in horses

“…One study found that enucleation early in life results in enhanced visual spatial ability in the remaining eye when compared to bilaterally intact controls viewing with one eye, but decreased motion processing and oculomotor behaviour when compared with bilaterally intact controls viewing both with one and both eyes . Depth perception develops after birth and requires comparison of images presented to both eyes . It has been found that kittens that have one eyelid sutured closed for 5 days, experience permanent deficits in binocular depth perception, and these deficits are greatest if the deprivation occurs between days 35 and 45 after birth .…”

Ocular abnormalities in a herd of Old Kladruber Horses: A cross‐sectional study

“…Horses, as a species, have a visual acuity, that is, among the best of the domestic mammals (20/30‐20/60) and rely on their vision as a defense when receiving information regarding the surrounding environment . Thus, normal behavior and good working performance of a horse also depend on undisturbed vision.…”

“…Horses, as a species, have a visual acuity, that is, among the best of the domestic mammals (20/30-20/60) and rely on their vision as a defense when receiving information regarding the surrounding environment. 1 Thus, normal behavior and good working performance of a horse also depend on undisturbed vision. A variety of ocular heritable, congenital, and acquired diseases have been described in the species; potential vision-threatening eye problems have been reported to range between 5% and 10% with a prevalence of approximately 7% in racehorses.…”