Xerotic Keratoconjunctivitis: Causes, Symptoms, and Treatment

What is Xerotic Keratoconjunctivitis?

Xerotic keratoconjunctivitis, commonly known as dry eye syndrome, is a chronic condition where the eyes do not produce enough tears or the tears evaporate too quickly. This leads to inflammation and damage to the surface of the eye, including the cornea (the clear front part) and the conjunctiva (the thin membrane covering the white part of the eye).

The condition can cause significant discomfort and, if left untreated, may lead to complications such as corneal ulcers or vision problems. It is more common in older adults but can affect people of all ages.

Source: Mayo Clinic

Common Causes

Xerotic keratoconjunctivitis can result from various factors that disrupt the normal production or quality of tears. Here are some of the most common causes:

• Aging: Tear production tends to decrease with age, making older adults more susceptible.
• Hormonal changes: Fluctuations in hormones, especially in women during pregnancy, menopause, or while using birth control pills, can contribute to dry eyes.
• Medications: Certain drugs, such as antihistamines, decongestants, antidepressants, and blood pressure medications, can reduce tear production.
• Environmental factors: Exposure to wind, smoke, dry air, or prolonged screen time can increase tear evaporation.
• Autoimmune diseases: Conditions like Sjogren's syndrome, rheumatoid arthritis, and lupus can affect tear glands.
• Eyelid problems: Issues like blepharitis (inflammation of the eyelids) or ectropion (outward turning of the eyelids) can prevent proper tear distribution.
• Contact lens use: Long-term use of contact lenses can irritate the eyes and reduce tear stability.
• Nutritional deficiencies: Lack of vitamin A or omega-3 fatty acids can impair tear production.
• Eye surgeries: Procedures like LASIK or cataract surgery can temporarily or permanently reduce tear production.
• Neurological conditions: Disorders like Parkinson's disease or Bell's palsy can affect blinking and tear distribution.

Source: National Eye Institute (NIH)

Associated Symptoms

People with xerotic keratoconjunctivitis often experience a range of symptoms that can vary in severity. Common symptoms include:

• Persistent dryness or a gritty sensation in the eyes
• Redness or irritation
• Burning or stinging sensation
• Excessive tearing (as a reflex response to dryness)
• Blurred vision or eye fatigue, especially after reading or screen use
• Sensitivity to light (photophobia)
• Stringy mucus in or around the eyes
• Difficulty wearing contact lenses
• Eye discomfort in windy or smoky environments

These symptoms can worsen throughout the day or in certain conditions, such as prolonged screen use or exposure to dry air.

Source: American Academy of Ophthalmology

When to See a Doctor

While mild dry eye symptoms can often be managed with over-the-counter treatments, you should consult a healthcare provider if you experience:

• Persistent dryness that does not improve with artificial tears
• Severe pain or discomfort in the eyes
• Significant redness or swelling
• Vision changes or blurred vision that does not resolve
• Sensitivity to light that interferes with daily activities
• Symptoms that worsen or do not respond to home treatments

Early diagnosis and treatment can help prevent complications and improve quality of life.

Diagnosis

Diagnosing xerotic keratoconjunctivitis typically involves a comprehensive eye examination. Your doctor may perform the following tests:

• Slit-lamp examination: A microscope with a bright light is used to examine the surface of the eye, including the cornea, conjunctiva, and eyelids.
• Tear film evaluation: Tests like the Schirmer test (measuring tear production) or tear break-up time (assessing how quickly tears evaporate) may be conducted.
• Osmolarity testing: Measures the concentration of particles in tears, which can indicate dry eye severity.
• Corneal staining: Special dyes (like fluorescein) are used to highlight damaged areas on the cornea.
• Meibomian gland evaluation: Assesses the function of oil glands in the eyelids, which are crucial for tear stability.

Your doctor may also review your medical history, medications, and environmental factors to identify potential causes.

Source: Cleveland Clinic

Treatment Options

Treatment for xerotic keratoconjunctivitis aims to relieve symptoms, improve tear quality, and address underlying causes. Options include:

Medical Treatments

• Artificial tears: Over-the-counter eye drops or ointments can provide temporary relief by lubricating the eyes.
• Prescription medications:
  • Cyclosporine (Restasis) or lifitegrast (Xiidra) to reduce inflammation and increase tear production.
  • Steroid eye drops for short-term relief of severe inflammation.
• Punctal plugs: Tiny devices inserted into tear ducts to block drainage and retain tears on the eye surface.
• Autologous serum drops: Eye drops made from your own blood serum, rich in growth factors to heal the eye surface.

Home and Lifestyle Remedies

• Use a humidifier to add moisture to dry indoor air.
• Take regular breaks during screen use (follow the 20-20-20 rule: every 20 minutes, look at something 20 feet away for 20 seconds).
• Wear wraparound sunglasses to protect eyes from wind and sun.
• Apply warm compresses to the eyelids to improve oil gland function.
• Stay hydrated and consume a diet rich in omega-3 fatty acids (found in fish, flaxseeds, and walnuts).
• Avoid smoking and exposure to secondhand smoke.

Source: World Health Organization (WHO)

Prevention Tips

While not all cases of xerotic keratoconjunctivitis can be prevented, the following strategies can help reduce your risk:

• Avoid prolonged exposure to dry or windy environments.
• Use artificial tears regularly if you are prone to dry eyes.
• Take breaks during activities that require intense visual focus, such as reading or using a computer.
• Maintain good eyelid hygiene to prevent blepharitis.
• Stay hydrated and eat a balanced diet with essential nutrients for eye health.
• Consult your doctor about medications that may contribute to dry eyes.

Emergency Warning Signs

Seek immediate medical attention if you experience any of the following symptoms, as they may indicate a serious complication or infection:

• Sudden, severe eye pain
• Significant vision loss or sudden blurred vision
• Increased sensitivity to light with severe discomfort
• Discharge from the eye that is thick, yellow, or green
• Swelling or redness that spreads beyond the eye
• Fever or general illness accompanying eye symptoms

These symptoms could indicate conditions like corneal ulcers, infections, or other serious eye problems that require urgent care.

Source: Centers for Disease Control and Prevention (CDC)