Entropion
Entropion describes when the eyelid turns inwards on to the eyeball. In the UK, it more commonly affects the lower lids.
What causes entropion?
In the UK, the commonest cause of entropion is due to ageing. Stretching of various tendons and loosening of the different layers of the eyelid allow the eyelid to rotate inwards resulting in entropion formation. Some conditions which cause scarring of the back surface of the eyelids can also result in the eyelids turning inwards. Rarely some conditions which cause weakening of the muscles eyelid can result in entropion formation.
What are the signs and symptoms of entropion?
The eyelid rubs against the eye causing irritation, redness, watering and blurred vision.
How is entropion treated?
Temporary Treatment
The lower eyelid can be pulled back into its normal position with a piece of tape placed between the lid and cheek. This is only a temporary measure for entropion of the lower eyelid, while awaiting surgery.
Sometimes an injection of botulinum toxin (Botox) may be used to help weaken the muscles on the front of the eyelid thus preventing the eyelid from turning inwards. This is similarly a temporary procedure and provides comfort whilst waiting for definitive surgery.
Long Term Treatment
The best option for treating entropion is by an operation. This often involves correcting the laxity of the eyelid, reattachment and strengthening of the eyelid tendons to restore the eyelid back to its normal position. This operation can be performed quite comfortably in the minor operations room as a day case procedure following a small injection of local anaesthetic into the eyelid.
Some types of entropion may require more extensive surgery, which is usually done in the main operating theatre.
Photos of a typical entropion operation (The pictures are quite graphic and may cause distress)