Increased Lacrimation in the Elderly: Causes and Management
The most common causes of increased tearing in elderly patients are epiphora (impaired tear drainage) rather than true hypersecretion, and reflex lacrimation secondary to ocular surface irritation—particularly from dry eye disease, eyelid malposition, or incomplete blinking.
Primary Distinction: Epiphora vs. True Lacrimation
The critical first step is distinguishing between two fundamentally different mechanisms 1:
- Epiphora: Overflow tearing due to drainage failure (mechanical obstruction or lacrimal pump dysfunction)
- Reflex hypersecretion: Excessive tear production triggered by ocular surface irritation
Most Common Causes in Elderly Patients
1. Paradoxical Tearing from Dry Eye Disease
This is the most frequent culprit in elderly patients. The dry eye guideline emphasizes that dry eye is most common in postmenopausal women 2. The mechanism is straightforward:
- Baseline tear film instability causes ocular surface irritation
- Irritation triggers reflex hypersecretion from the lacrimal gland
- Patients complain of "watery eyes" despite having underlying aqueous deficiency
2. Eyelid Malposition and Dysfunction
Age-related changes cause 2:
- Eyelid laxity leading to ectropion or entropion
- Lagophthalmos (incomplete eyelid closure)
- Orbicularis oculi weakness impairing the lacrimal pump mechanism
- Incomplete blinking (associated with increased screen time, even in elderly)
3. Nasolacrimal Duct Obstruction
Mechanical blockage anywhere in the drainage system causes true epiphora 1.
4. Ocular Surface Irritation
Multiple age-related factors 2:
- Blepharitis and meibomian gland disease (extremely common in elderly)
- Trichiasis from eyelid malposition
- Conjunctival inflammation
- Exposure keratopathy
5. Neurologic Causes
Facial nerve dysfunction can paradoxically cause hyperlacrimation through 3:
- Aberrant nerve regeneration (crocodile tears syndrome)
- Reflex tearing from exposure due to lagophthalmos
- Impaired tear drainage from orbicularis weakness
Diagnostic Approach
History (Specific Details to Elicit)
- Unilateral vs bilateral: Unilateral suggests obstruction or focal pathology
- Constant vs intermittent: Constant suggests obstruction; intermittant suggests reflex
- Triggers: Wind, cold, reading (suggests dry eye with reflex tearing)
- Associated symptoms: Burning, grittiness (dry eye); discharge (infection); facial weakness (nerve palsy)
- Medication review: Antihistamines, anticholinergics worsen dry eye 2
Physical Examination (Specific Findings)
- Eyelid position and closure: Check for ectropion, entropion, lagophthalmos
- Blink assessment: Incomplete blinking increases evaporative dry eye two-fold 2
- Punctal position and patency: Everted or stenotic puncta
- Ocular surface: Look for conjunctival injection, corneal staining, meibomian gland dysfunction
- Palpation: Press on lacrimal sac to check for reflux (indicates obstruction)
Diagnostic Tests
- Diagnostic probing and syringing: Sufficient to evaluate drainage system function in most patients 1
- Schirmer test: Useful if facial nerve lesion suspected; bilateral difference >27% is significant 4
- Fluorescein dye disappearance test: Simple office test for drainage function
Management Algorithm
Step 1: Address Underlying Dry Eye (Most Common)
If history/exam suggests dry eye with reflex tearing:
- Artificial tears (preservative-free for frequent use)
- Treat meibomian gland dysfunction with warm compresses and lid hygiene
- Address blepharitis aggressively 2
- Reduce screen time and encourage complete blinking
Caveat: The elderly patient complaining of "watery eyes" often has dry eye—this is counterintuitive but critical to recognize.
Step 2: Correct Eyelid Malposition
If ectropion, entropion, or significant laxity:
- Refer to oculoplastics for surgical correction
- Temporary measures: lubricating ointments, taping
Step 3: Manage Nasolacrimal Obstruction
If probing/syringing confirms obstruction:
- Refer to ophthalmology for dacryocystorhinostomy (DCR) or balloon dacryoplasty
- Conservative management rarely effective for complete obstruction
Step 4: Evaluate for Systemic Disease
Important pitfall: Clinically significant dry eye in elderly should prompt consideration of Sjögren's syndrome, which carries 18.9% risk of lymphoid malignancy 2. Have low threshold for:
- Anti-SSA/SSB antibodies
- Schirmer test
- Referral to rheumatology if positive
Step 5: Consider Neurologic Causes
If facial asymmetry, weakness, or history of Bell's palsy:
- Evaluate for aberrant regeneration
- Manage exposure keratopathy aggressively
- Consider neurology referral
Critical Pitfalls to Avoid
- Assuming "watery eyes" means too many tears: Most elderly patients with tearing have underlying dry eye with reflex hypersecretion
- Missing Sjögren's syndrome: Maintain high suspicion in patients with persistent aqueous deficiency 2
- Overlooking eyelid malposition: Even subtle ectropion impairs lacrimal pump function
- Ignoring medications: Anticholinergics and antihistamines exacerbate dry eye 2
- Failing to examine blinking: Incomplete blinking doubles evaporative dry eye risk 2