The term Entropion describes the rolling inward of the lid margin towards the eye. As a result, the eyelashes constantly rub against the cornea (the front transparent part of the eye) and the conjunctiva (the membrane that encloses the eye), sometimes damaging these structures.

Causes

The most common cause of entropion is the laxity of tissues that support the lower eyelid, seen as part of the normal ageing process. This results in the inward rolling of the eyelid margin. Occasionally, entropion is due to scarring of the inner surface of the eyelid, caused by inflammation, chronic infections or trauma.

Symptoms          

The constant rubbing of the eyelashes against the cornea and conjunctiva can lead to the following symptoms:

• excessive tearing
• crusting of eyelid and mucous discharge
• grittiness or sandy feeling
• pain when exposed to bright light
• blurring of vision

Complications

Longstanding, uncorrected entropion can lead to gradual scarring of the cornea, as well as increase the risk of infection of the cornea. It is thus important to have this condition repaired before these complications permanently damage the eye. If entropion is present in an eye requiring cataract removal, it is advisable to correct the lid abnormality first, before cataract surgery.

Treatment

Surgery is usually required to tighten the lower eyelid and its attachments which will restore some of its elasticity and to reposition it. If you need to delay surgery, tape or sutures can be used to temporarily reposition the eyelid and protect the eye. Lubricating eyedrops and ointments are also helpful. Unfortunately, these measures do not result in permanent cure.

Entropion causes irritation which in severe cases may lead to permanent blurring of vision. It should be treated by ophthalmic surgeons who are trained to manage this condition.

* This is a general guide. If in doubt, please consult your doctor.