- Appearance of a painless bump or lump in the upper eyelid, or, less commonly, in the lower eyelid
- Blurred vision, if the chalazion is large enough to press against the eyeball
What causes a chalazion?A chalazion can develop when the oil produced by glands within the eyelids, called the meibomian glands, becomes thickened and is unable to flow out of the gland. The oil builds up inside the gland and forms a lump in the eyelid. Eventually the gland may break open and release the oil into the surrounding tissue causing an inflammation of the eyelid. Risk factors for the development of a chalazion include:
- Chronic blepharitis, an inflammation of the eyelids and eye lashes
- Acne rosacea
- Viral infection
How is a chalazion diagnosed?A chalazion can be diagnosed through a comprehensive eye examination. Testing, with special emphasis on evaluation of the eyelids, may include:
- Patient history to determine any symptoms the patient is experiencing and the presence of any general health problems that may be contributing to the eye problem.
- External examination of the eye, including lid structure, skin texture and eyelash appearance.
- Evaluation of the lid margins, base of the eyelashes and oil gland openings using bright light and magnification.