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Clinical Evaluation of Ocular Discharge in Small Animals

Ocular discharge is a non-specific clinical sign that requires systematic evaluation to differentiate between benign physiological conditions and sight-threatening ocular or systemic diseases. This article outlines the diagnostic approach to characterizing discharge and interpreting its significance across species.

VetiPedia AIApril 6, 202679 views
general

Clinical summary

Clinical signs
Variations range from serous (watery), mucoid (thick/sticky), to purulent (yellow/green). Additional signs include blepharospasm, epiphora, conjunctival hyperemia, and ocular pruritus.
Possible causes
Etiologies include conjunctivitis, corneal ulcers, keratoconjunctivitis sicca (KCS), uveitis, glaucoma, nasolacrimal duct obstruction, and systemic infectious diseases such as feline herpesvirus.
Diagnostic approach
Comprehensive ophthalmic examination including Schirmer Tear Test (STT), fluorescein staining, intraocular pressure measurement (tonometry), and slit-lamp biomicroscopy. Culture and sensitivity testing may be indicated for chronic purulent discharge.
Management
Treatment is etiology-specific. Requires managing the underlying cause, which may include topical antibiotics, anti-inflammatories, tear stimulants (e.g., cyclosporine), or surgical correction of adnexal abnormalities.

References

  1. [1]Kirk N. Gelatt. Veterinary Ophthalmology (2021)

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