The most common symptom referable to the lacrimal organs is a superabundance of tears in the conjunctival sac. This condition can be due to hypersecretion by the lacrimal gland (lacrimation) or an obstruction somewhere in the lacrimal passages (epiphora). Differentiating between these conditions involves instilling fluorescin and observing nasal discharge for staining, indicating a blocked outflow if no stain is present.
Strong emotions like sorrow, joy, and anger cause temporary attacks of lacrimation. Persistent weeping without emotional triggers may indicate underlying pathologies such as tabes dorsalis or exophthalmic goiter. Irritation from wind, smoke, foreign bodies in the cornea, or ammonia fumes also causes excessive tearing.
<Callout type="important" title="Critical Differentiation">Differentiating between lacrimation and epiphora is crucial for proper diagnosis and treatment.</Callout>
Subnormal secretion of the lacrimal gland can be due to atrophy from cicatricial occlusion, dacryops, Mikulicz’s disease, facial palsy, or neuroparalytic keratitis. Epiphora occurs when tear guidance is disturbed by lid malposition or mutilation, leading to accumulation and overflow.
<Callout type="warning" title="Potential Complications">Epiphora can lead to dacryocystitis if the nasal duct becomes obstructed, causing swelling over the lacrimal sac.</Callout>
Dacryocystitis symptoms include epiphora, fullness over the lacrimal sac, and regurgitation of fluid from the punctum. The condition can be catarrhal or purulent depending on the presence of pus.
<Callout type="tip" title="Diagnostic Technique">Using fluorescin to diagnose blocked tear ducts is a non-invasive method that avoids irritation.</Callout>
Lacrimal fistulas, dacryoadenitis, and dacryops are other conditions affecting the lacrimal system. Proper diagnosis involves understanding their symptoms and causes.
Key Takeaways
- Differentiate between lacrimation and epiphora using the fluorescin test.
- Recognize symptoms of dacryocystitis, such as fullness over the sac and regurgitation from punctum.
- Understand conditions like dacryops and dacryoadenitis for comprehensive diagnosis.
Practical Tips
- Use fluorescin to diagnose blocked tear ducts without causing irritation.
- Check for nasal discharge staining after instilling fluorescin in suspected epiphora cases.
- Consider underlying pathologies when persistent weeping occurs without emotional triggers.
Warnings & Risks
- Failure to differentiate between lacrimation and epiphora can lead to incorrect treatment approaches.
- Dacryocystitis can cause significant swelling and pain if left untreated, potentially leading to abscess formation.
Modern Application
While the diagnostic methods described in this chapter are foundational, modern medical practices have refined techniques for diagnosing lacrimal system issues. However, understanding these historical approaches is crucial as they provide a basis for recognizing symptoms and guiding initial treatment decisions.
Frequently Asked Questions
Q: What is the difference between lacrimation and epiphora?
Lacrimation refers to an excessive production of tears by the lacrimal gland, while epiphora occurs when there is a blockage in the tear drainage system leading to overflow.
Q: How can one differentiate between catarrhal and purulent dacryocystitis?
Catarrhal dacryocystitis involves watery or mucus discharge, whereas purulent dacryocystitis is characterized by the presence of pus in the nasal discharge.
Q: What role does fluorescin play in diagnosing lacrimal system issues?
Fluorescin is used to diagnose blocked tear ducts and differentiate between normal tear flow and obstruction. It helps identify whether tears are following their regular course or if there's an outflow blockage.