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Macrophakia in three cats.

Petra Benz1, Ingo Walde, Michaela Gumpenberger

  • 1Department for Companion Animals and Horses, University of Veterinary Medicine, Veterinärplatz 1, A-1210 Vienna, Austria. petra.benz@vetmeduni.ac.at

Veterinary Ophthalmology
|September 20, 2011
PubMed
Summary

Three young cats experienced bilateral macrophakia, a condition where the vitreous is replaced by the lens, leading to vision loss. Ophthalmic and pathological exams confirmed this rare feline eye disease and associated retinal changes.

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Area of Science:

  • Veterinary Ophthalmology
  • Comparative Pathology

Background:

  • Macrophakia, a rare ocular condition, involves the vitreous humor being replaced by lens material.
  • This condition can lead to significant visual impairment in affected animals.

Observation:

  • Three feline cases (3, 5, and 9 years old) presented with progressive visual deficits.
  • Ophthalmic examinations revealed bilateral macrophakia and significant retinal alterations, including tapetal hyper-reflectivity, attenuated retinal vessels, and retinal folds.
  • Associated conditions noted were subconjunctival orbital fat prolapse in one cat and microphthalmos in another.

Findings:

  • Confirmed diagnosis of macrophakia through gross pathology and ultrasound examinations.
  • Consistent retinal changes observed across all affected feline subjects.

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  • Macrophakia in conjunction with other ocular anomalies suggests complex developmental or pathological processes.

    • Implications:

    • Highlights the importance of comprehensive ophthalmic evaluation in young animals with visual impairments.
    • Contributes to the limited veterinary literature on feline macrophakia, aiding future diagnosis and research.
    • Suggests potential genetic or congenital factors contributing to macrophakia and associated ocular abnormalities in cats.