Visual defects in white-tailed deer from Michigan six case reports

Area of Science:

• Veterinary Ophthalmology
• Wildlife Disease Ecology
• Mammalian Pathology

Background:

• Understanding visual impairments in wildlife is crucial for population health assessments.
• White-tailed deer (Odocoileus virginianus) are ecologically significant and widespread, making them important indicators of environmental health.
• Ocular diseases can impact survival and behavior in free-ranging animals.

Observation:

• This report describes six distinct cases of visual defects in free-ranging white-tailed deer from Michigan.
• The affected deer were not related, indicating sporadic occurrences of these conditions.
• Visual defects ranged from congenital abnormalities to acquired conditions.

Findings:

• Two cases presented with congenital visual defects.
• Two cases were attributed to infectious etiologies affecting vision.
• One case resulted from central nervous system neoplasia, and another from degenerative changes in both lenses.

Implications:

• The diverse causes of visual defects underscore the varied health challenges faced by wildlife populations.
• Identifying the etiology of ocular diseases is essential for targeted wildlife health management and conservation efforts.
• These findings contribute to the understanding of ophthalmological conditions in wild cervids.