Ophthalmological findings in a closed herd of Lipizzaners.

The article records a study conducted on the eye health of Lipizzaner horses in three separate locations. The results displayed various eye diseases and disorders, primarily affecting the conjunctiva, cornea, and fundus. Interestingly, horses held in different housing conditions had varying rates of certain disorders.

Objective

This exploratory research studied the ophthalmic health status of Lipizzaner horses. As there were no prior studies on this topic, the researchers aimed to conduct an extensive ophthalmological survey in a closed herd across three distinct housing systems.

Methods

• The study was performed on the Lipizzaner horses at the Federal Stud Piber, Heldenberg, and the Spanish Riding School Vienna, encompassing all the horses at these locations.
• All the horses were subjected to detailed ophthalmological examinations, and findings were meticulously documented.
• The researchers correlated the ocular abnormalities with various factors such as the horse’s age, gender, location, and housing condition.
• In the ccase of ataracts, which were diagnosed in some horses, pedigree analysis was conducted to check whether inbreeding was a precipitating factor.

Findings

• Out of 267 horses that met the research criteria, ocular findings were prevalent in 203 cases. The predominant abnormalities involved the conjunctiva, cornea, and the fundus of the horses’ eyes.
• In particular, 24 horses were diagnosed with cataracts; however, pedigree analysis showed no indications of inbreeding leading to cataract development.
• The study found that the location and housing of the horses significantly affected the prevalence of certain eye abnormalities. Horses stabled at Piber were more prone to conjunctival and fundic abnormalities. Moreover, fewer ocular issues were observed in horses housed in open boxes, while free stalls led to a higher rate of conjunctivitis.
• Interestingly, there was no interrelation found among different eye diseases observed in the horses, suggesting that these conditions might develop independently of each other.

Conclusions

• Acquired corneal abnormalities were found to be over-represented in this study.
• The study’s findings provide a baseline for further research into the pathogenesis, or development, of eye diseases in Lipizzaner horses.