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Blepharitis & Demodex

What is Blepharitis?

Blepharitis causes eyelids to become red, swollen and inflamed. It doesn’t normally cause serious damage to the eyes, but it can be very uncomfortable. It tends to be a long-term condition, which means you’re likely to need ongoing treatment. Severe cases do have a risk of causing long-term damage, but fortunately these are quite rare. When the front (anterior) part of the eyelids becomes sore, this can be caused by an infection, allergy or a general sensitivity to bacteria present on the eyelids. It can also be associated with some scalp conditions, such as very dry or oily skin and dandruff.

What is Demodex?

Demodex mites are microscopic parasites that naturally inhabit human skin. They are now recognised as a significant contributor to many cases of blepharitis. Demodex can overpopulate the eyelash follicles and meibomian glands, triggering inflammation, debris buildup, and characteristic “cylindrical dandruff” at the lash base. Studies show that Demodex infestation is far more common in people with blepharitis, with prevalence ranging from 29% to 90% in symptomatic patients.

The link between the two conditions is  cyclical: Demodex overgrowth irritates the eyelids and disrupts gland function, which worsens blepharitis; in turn, chronic blepharitis creates an environment where mites thrive. This interdependence is why targeted treatment of Demodex is often essential for resolving persistent or treatment‑resistant blepharitis.

Risk factors

Blepharitis is more common in people over the age of 50, but anyone can develop it. This is often because the glands that make the normal tears, particularly the oily part of the tears, tend to become less effective as you get older.

What are the symptoms of Blepharitis?

Blepharitis can cause crusting and white scales may stick to the roots of eyelashes. Your eyelid edges may become red and your eyes will feel gritty, burning, sore or itchy.

Treatment for Blepharitis

At Haig-Brown Optometry we now offer intense pule light (IPL) and low-level light therapy (LLLT) treatment. In clinical studies this treatment has shown a positive improvement to the symptoms of blepharitis. IPL uses thermal light pulses, to stimulate the Meibomian glands to resume normal activity. It is applied to the periorbital and cheekbone areas, it stimulates contraction of the glands, increasing the lipid stream and reducing the evaporation of tears.

LLLT emits light at a specific wavelength which triggers heating of the eyelids. This treatment eases the spill of the tear film’s oily component from the Meibomian glands, stabilizing the lipid layer and providing immediate relief.

Session frequency and duration

Procedure steps

1. IPL session

2. LLLT session with blue and red-light masks

No contact with the eye itself is involved.

What to expect during treatment

Possible side effects

The treatment is generally safe, but as with any procedure, there are some potential side effects:

Uncommon:

Rare:

These symptoms typically resolve within 24–48 hours. All precautions are taken to minimise risk, including the use of eye protection and skin-cooling gels if required.

Who is this treatment suitable for?

This treatment is ideal for:

Contraindications include:

A full clinical assessment will be conducted to determine if you are a suitable candidate.

*If you are unsure, please consult your Optometrist or the medical practitioner who prescribed the drugs


PLEASE NOTE: The treatment room is on the first floor, which will involve a flight of stairs. If you have mobility issues, please speak to a member of staff prior to booking.

Many patients report:

  • Improved comfort
  • Reduced reliance on eye drops
  • Better quality of life

Benefits may be noticed after the first session, but optimal results typically appear after the full course.

  • Avoid direct sun exposure and use sunscreen on the treated area for 24–48 hours
  • Follow any specific advice provided by your practitioner
  • Attend all scheduled appointments to achieve the best outcome
  • Each pulse is quick, and the session typically lasts 5-10 minutes

On removing the mask after each LLLT session you may find your vision is affected and your perception of colours will be temporarily altered. This is a normal effect from exposing the eyes to light of certain colours and will completely resolve in a few minutes.

Skin may feel warm or slightly pink for a few hours after treatment.

Apply a gentle, hydrating moisturiser and broad-spectrum SPF 30+ daily. Wear sunglasses when outside for the first week.

Things to avoid:

  • Direct sun exposure for 1–2 weeks
  • Harsh skincare products for 3–5 days
  • Heat treatments like saunas or hot baths for 24–48 hours

Questions

If you have any questions about your treatment, don’t hesitate to contact us. We’re here to support you every step of the way.