Signs and symptoms
Painless swelling on the eyelid
Eyelid tenderness typically none-to-mild
Increased tearing
Heaviness of the eyelid
Redness of conjunctiva

Complications
A large chalazion can cause astigmatism due to pressure on the cornea.As laser eye surgery involves shaping the cornea by burning parts of it away, weakening its structure, post-operation people can be left predisposed to deformation of the cornea from small chalazia.Complications of corticosteroid injection include hypopigmentation and fat atrophy which is less likely to occur in conjunctival approach of injection.A chalazion that reoccurs in the same area may rarely be a symptom of sebaceous carcinoma. Diagnosis
A chalazion or meibomian cyst can sometimes be mistaken for a stye. Differential diagnosis
Sebaceous gland adenoma
Sebaceous gland carcinoma
Sarcoid granuloma
Foreign body granuloma

Treatment
General treatment
Chalazia will often disappear without further treatment within a few months, and virtually all will resorb within two years.Healing can be facilitated by applying a moist warm compress to the affected eye for approximately 10–15 minutes, 4 times per day. This promotes opening, drainage, and healing by softening the hardened oil that is occluding the duct. In addition, it is helpful to scrub the lid margin (at the base of the eyelashes) with a washcloth and mild (baby) shampoo, which removes oily debris.Topical antibiotic eye drops or ointment (e.g., chloramphenicol or fusidic acid) are sometimes used for the initial acute infection, but are otherwise of little value in treating a chalazion.If they continue to enlarge or fail to settle within a few months, smaller lesions can be injected with a corticosteroid. Larger ones can be surgically removed using local anesthesia.
Surgery of small chalazia does not require stitches, as the cut is at the back of the eyelid and therefore the cut cannot be seen, and the cosmetic result is excellent. Larger chalazia are removed through an incision in front of the eyelid. Larger chalazia usually push on the skin of the eyelid, and this is the main reason why doctors prefer removing them this way. The incision is not usually larger than 3mm and it is made on top of the chalazion. The lump is removed and then pressure is applied to the incision to prevent oozing. This type of surgery is closed with very fine stitches. They are hardly visible and are usually removed within a week after the surgery has been performed. Although chalazia are rarely dangerous, it is common to send the chalazion or part of it to a laboratory to screen for cancer.When surgery for a chalazion is considered, people who take aspirin or any other blood-thinning medications are advised to stop taking them one week prior to the procedure as they may lead to uncontrollable bleeding.In rare cases, people are kept overnight in the hospital after chalazion surgery. This includes cases in which complications occurred and the person needs to be closely monitored. In most cases, however, people are able to go home after the operation has ended. The recovery process is easy and quite fast. Most people with chalazion experience some very minor discomfort in the eye, which can be easily controlled by taking painkilling medication.