Hard Ball in Eyelid, What is it? (photo)

The eyelid has many oil glands that provide lubrication for the ocular surface. Sometimes these glands become blocked and the oil gets trapped within the eyelid causing a small hard bump in the eyelids. Often this will initially cause redness and irritation first, but sometimes not.

I would recommend you see an Oculoplastics surgeon or a comprehensive Ophthalmologist.

A hard ball-like bump in the upper eyelid that is painless and visible could be a chalazion or a meibomian cyst. A chalazion occurs when a meibomian gland (which secretes oil to lubricate the eye) becomes blocked, leading to swelling. Treatment typically involves warm compresses to promote drainage, and in some cases, steroid injections or surgical removal may be necessary if the bump persists or causes cosmetic concerns. It's best to consult with an eye care professional for an accurate diagnosis and personalized treatment plan.

I can't tell much from the photograph. However young patient is hard painless small ball in the upper lid is most often assist. It could be removed with local anesthesia.

Chalazion is Greek for stone, meaning a small stone in the eyelid. It has a typical appearance, especially from the undersurface of the eyelid.An oculoplastic surgeon will be able to examine the eyelid and then treat either medically or surgically with incision and curettage. 

Agree that the medical term is a chalazion. Best to obtain and have surgical removal under local anesthesia. 

This hard mass is most likely a chalazion due to an impacted oil gland.  You should be seen by an ophthalmologist for medical care and possible drainage of the cyst.  

Difficult to tell exactly without a physical exam but likely a cyst of some type which should be easily removable with just local anesthesia in the office. You should visit a qualified eye or plastic surgeon for further evaluation.