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Microphthalmia with multiple ocular abnormalities in a foal.

Peter W Cho1, Shin Ae Park1, Dodd Sledge2

  • 1Veterinary Clinical Sciences, Purdue University College of Veterinary Medicine, West Lafayette, Indiana, USA.

Veterinary Ophthalmology
|July 16, 2024
PubMed
Summary
This summary is machine-generated.

This study describes a rare congenital condition in a foal with microphthalmia (abnormally small eyes) and other severe ocular defects, including retinal dysplasia.

Keywords:
aphakiachoristomacongenitalretinal dysplasia

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Area of Science:

  • Veterinary Ophthalmology
  • Comparative Pathology
  • Congenital Ocular Abnormalities

Background:

  • Microphthalmia and multiple ocular abnormalities can cause blindness in foals.
  • Early diagnosis and detailed characterization are crucial for understanding rare congenital conditions.

Observation:

  • A 12-hour-old foal presented with blindness, microphthalmia, and strabismus in both eyes.
  • Ophthalmic examination revealed severe structural abnormalities.
  • Ultrasound and histopathology confirmed microphthalmia, aphakia, corneal defects, and retinal dysplasia.

Findings:

  • Ultrasound biomicroscopy showed a hyperechoic cornea, absent lens (aphakia), and tissue strands spanning the anterior chamber.
  • Histopathology confirmed microphthalmia, poorly formed anterior chambers with lacrimal tissue, and segmentally detached, atrophied retinas with dysplasia.
  • The foal exhibited a rare congenital condition with significant anterior segment dysgenesis and retinal abnormalities.

Implications:

  • This case highlights a rare congenital ocular malformation in a foal.
  • Detailed clinical, ultrasonographic, and histologic descriptions aid in diagnosing and understanding such conditions.
  • Further research into the genetic or environmental factors causing these abnormalities is warranted.