Types of Blepharitis
Anterior Blepharitis
Anterior blepharitis occurs at the outside front edge of the eyelid, where the eyelashes are rooted. It is caused by low-grade bacterial infections with inflammation, most commonly from staphylococcus, or skin conditions such as seborrheic dermatitis, leading to dandruff-like scaling and accumulation of crusts around the eyelash roots. Symptoms include redness, swelling, and stickiness with crusting at the base of the eyelashes, which can cause irritation and discomfort.
Proper eyelid hygiene is crucial in managing anterior blepharitis. Regular cleaning with warm water and gentle eyelid scrubs can help remove debris and reduce inflammation. Special solutions to help clean the eyelids and lashes are available.
Posterior Blepharitis
Posterior blepharitis affects the inner edge of the eyelid that touches the eyeball, specifically where the meibomian glands are located. These glands produce oils that form part of the tear film, helping to keep the eyes moist. When these glands become clogged or function poorly, it leads to inflammation, irritation, and dry eyes. Posterior blepharitis is often associated with meibomian gland dysfunction (MGD), contributing to dry eye syndrome.
Treatment for posterior blepharitis and MGD often involves warm towels to unblock the meibomian glands, combined with eyelid hygiene, and, in more severe cases, prescribed antibiotics or anti-inflammatory medications.
Adjunctive in-clinic treatments for posterior blepharitis and MGD include BlephEx, MiboFlo and Optilight IPL.
WHAT CAUSES BLEPHARITIS?
Several factors cause blepharitis, often related to the dysfunction of the oil-producing meibomian glands in the eyelids. These glands play a crucial role in maintaining the eye’s tear film, and blepharitis can result when they become blocked or inflamed.
Some people are genetically more prone to get blepharitis. One group is those with Rosacea will often develop worsening blepharitis and MGD with age.
Both Children and Adults get blepharitis. Although often it seems surprising that young children can get blepharitis, they in fact can suffer quite badly from blepharitis and it can lead to them getting styes and chalazion.
Some common causes include:
- Bacterial infections: Staphylococcal bacteria can infect the eyelids and cause inflammation.
- Meibomian gland dysfunction (MGD): Blocked oil glands can lead to dry eyes and irritation.
- Seborrheic dermatitis: A skin condition that leads to oily debris on the eyelid margins.
- Allergies or sensitivities: Reactions to makeup, pollen, or contacts can trigger blepharitis.
- Demodex mites: Tiny mites on the skin can contribute to eyelid inflammation.