A common but undiagnosed condition, blepharitis affects people of all ages and it is more common in people who are above the age of 50 . Blepharitis is an inflammatory condition that mostly affects the eyelids. In this article, we will discuss what causes blepharitis, how it's treated and how it can be prevented.What Is Blepharitis?
The eyelids are the folds of the skin that cover the eyes and act as a shield by protecting the eyes from dirt and injury. At the edge of the eyelids, there are hair follicles that contain oil glands, these oil glands can become clogged which can trigger certain eye disorders like blepharitis.
What Causes Blepharitis
The exact cause of blepharitis is unknown, but different factors increase the risk of blepharitis, which includes bacterial infection, malfunctioning oil glands, eyelash mites, dandruff of the scalp and eyebrows (seborrheic dermatitis) and allergy reactions to eye medications.
Blepharitis isn't usually contagious and doesn't cause any damage to eyesight.
The doctor will ask about your symptoms, medical history and examine your eyelids through some tests which include the following:
Slit-lamp examination - Slit lamp is a low-power microscope which emits thin-beam light that allows the doctor to look outside of the eyes and eyelids.
Swabbing skin for testing - The doctor may also use a swab to collect a sample of the oil formed in your eyelid. This sample is then analysed to see if there is any bacteria or fungi.
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