What is a Sty eye?
An external sty is also called hordeolum.
It is basically an infection
of the sebaceous glands of Zeis at the base of the eyelashes, or an
infection of the apocrine sweat glands of Moll.
How is it formed?
Our eye has various small glands hidden in itself. They help in
lubricating the eye and prevent against friction and dryness.
Sometimes, these glands get infected from outside by infected hands,
hankerchief, spectacles, or pulled eyelash. This leads to formation
a sty at that point.
External stys are formed on
outside of the lids and can be seen as
small red bumps.
- External sty
- Internal sty
Internal stys are infections
the meibomian sebaceous glands lining
the inside of the eyelids. They cause a red bump underneath the
lid. Generalized redness and swelling may or may not be
on the outside.
look much similar to a sty.
- Chalazia are often smaller in size.
- They are more painful and usually produce no lasting damage.
- Stys have an acute onset and usually short in duration (710
without treatment. Whereas, chalazia that are chronic and
resolve without intervention.
Signs and symptoms
Sty eye on lower part of the eye
- The first sign of a sty is a small, yellowish spot at the
the bump that develops as pus accumulates in the area.
- Localized swelling of the eyelid can be there.
- Localized pain
- Often, crusting of the eyelid margins
- Patient has burning in the eye.
- A scratchy sensation on the eyeball can be felt. This is due
sensation of a foreign body in the eye.
- As the infection spread, mucoid discharge oozes out of the
of Sty eye
They are commonly caused by a Staphylococcus aureus bacterial
infection, transfer of fecal matter to the eye area or by the
of an oil gland at the base of the eyelash. Although they are
particularly common in kids, stys are experienced by people of all
Styes can be triggered by:
Also, sharing of face towels should be avoided to curtail the spread
infection between individuals.
- Poor nutrition
- Sleep deprivation
- Lack of hygiene
- Rubbing of the eyes.