20.6.2025
Unpleasant swelling, redness, and eyelid pain – this is often how a chalazion, also known as a meibomian cyst, begins. This inflammatory condition of the eyelid can affect practically anyone and often causes significant discomfort. What exactly is a chalazion, and how does it differ from the more familiar stye? We asked MUDr. Pamela Hrušovská, an ophthalmologist at the Gemini Eye Clinic.
What is a chalazion?
A chalazion develops when the opening of a meibomian (oil) gland in the eyelid becomes blocked. The oil begins to accumulate, triggering an inflammatory response. “Initially, it presents as swelling, redness, and tenderness of the eyelid. Later, it may subside and form a smaller, red, and often only mildly painful lump under the skin,” explains Dr. Hrušovská.
How to recognize the difference between a chalazion and a stye?
Although both chalazions and styes involve eyelid inflammation, they are not the same. The key difference lies in the location and cause of the inflammation.
- A stye (hordeolum) typically affects the oil glands located at the edge of the eyelid and is usually caused by a bacterial infection. It often resolves on its own within a few days.
- A chalazion (meibomian cyst) forms farther from the edge of the eyelid and involves a different type of gland. Chalazions tend to recur and may sometimes require surgical removal.
How is a chalazion treated?
The cornerstone of home care is warmness. Warm compresses applied to the eyelid help to soften and release the accumulated oil in the blocked gland. These compresses should be applied several times a day for 10–15 minutes at a time.
If warm compresses alone are not effective and the inflammation worsens, a doctor may prescribe an antibiotic ointment or recommend further treatment, including minor surgical intervention if necessary.
