Canis ISSN: 2398-2942

Micropunctum

Introduction

• Cause: variation of imperforate punctum - congenital abnormality of lacrimal system more common in the lower punctum.
• Signs: epiphora common - may have rust-coloured staining of hair at medial canthus.
• Diagnosis: delayed fluorescein drainage.
• Treatment: surgery if required.
• Prognosis: good.

Pathogenesis

Etiology

• Congenital.

Pathophysiology

• Congenital narrowing of lacrimal punctum → epiphora (tear overflow).

Timecourse

• Usually not seen >8 weeks old.

Diagnosis

Treatment

Outcomes