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Strabismus measurements in the Siamese cat
American Journal of Optometry and Physiological Optics
|October 1, 1976
Summary
Siamese cats exhibit visual pathway abnormalities linked to strabismus. Newborns show outward eye deviation (exotropia), while adults display varied eye alignment, including inward (esotropia) or outward deviations.
Area of Science:
- Veterinary Ophthalmology
- Comparative Neurology
- Animal Vision Science
Background:
- Strabismus, or eye misalignment, is observed in Siamese cats.
- Existing research suggests a connection between visual pathway anomalies and strabismus in this breed.
Purpose of the Study:
- To investigate the ocular alignment and its changes over time in Siamese cats.
- To correlate visual pathway characteristics with observed strabismus in Siamese cats.
Main Methods:
- Utilized a telephotographic technique for precise measurement of eye positions.
- Observed and recorded ocular alignment in both newborn and adult Siamese cats.
Main Results:
- Newborn Siamese cats consistently presented with a noticeable exotropia (outward eye deviation).
- Adult Siamese cats demonstrated a range of ocular alignments, including esotropia (inward deviation), orthophoria (aligned eyes), and exotropia.
- The observed strabismus in adult cats could manifest intermittently.
Conclusions:
- Siamese cats display dynamic changes in ocular alignment from birth through adulthood.
- The findings support the hypothesis of underlying visual pathway abnormalities contributing to strabismus in Siamese cats.