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Blepharitis

What is Blepharitis?

Blepharitis is an inflammation of the eyelids. It usually affects the edges (margins) of the eyelids. It is not usually serious, but may become an uncomfortable, irritating problem. Blepharitis is typically chronic (persistent). Both eyes are usually affected.

What causes blepharitis?

There are three main types of blepharitis which can cause similar symptoms: staphylococcal blepharitis, seborrhoeicblepharitis and meibomianblepharitis.

Staphylococcal blepharitis

This type of blepharitis is thought to be caused by a bacterium (germ) called staphylococcus. The staphylococcus bacterium commonly lives in low numbers on the skin without doing any harm. However, in some people, it seems that this bacteria causes a localised infection of the eyelids to cause blepharitis. Why this may occur in some people and not most people is not clear.

Seborrhoeicblepharitis

This type is closely associated with a skin condition called seborrhoeic dermatitis. In seborrhoeic dermatitis, the affected skin becomes more oily and can become scaly. Seborrhoeic dermatitis typically causes bad dandruff and sometimes a rash, commonly on the face and upper body. The underlying cause of seborrhoeic dermatitis is not clear. A yeast germ called Malassezia furfur is involved. However, it is not just a simple skin infection and it is not contagious (you cannot 'catch' this condition from others). This yeast germ lives in the sebum (oil) of human skin in most adults. In most people it does no harm. But some people seem to 'react' to this germ in some way which causes inflammation.

Meibomianblepharitis — often called meibomian gland dysfunction

The tiny meibomian glands in the eyelids lie just behind the eyelashes. You have about 25-30 meibomian glands on each upper and lower eyelid. They make a small amount of oily fluid (oily secretion) which comes out on the back of the eyelids next to the eye. This oily fluid forms the outer layer of the tear film which lubricates the front of the eye. People with meibomianblepharitis are thought to have a slight problem with their meibomian glands and the fluid they produce. This may lead to eyelid inflammation. (This also explains why people with meibomianblepharitis often have dry eyes as the fluid they make may not be adequate to lubricate the eye.)

Combinations of the above

In practice, it is often not possible to tell the difference between the above causes. Indeed, seborrhoeicblepharitis commonly occurs together with meibomianblepharitis. And, skin which is inflamed anyway is more likely to become infected by the staphylococcus. So, all three causes may contribute to many cases with the main cause varying from case to case.

A vicious circle may play a part

Blepharitis tends to 'flare-up' for a time and then ease off in severity. If you have blepharitis, you are likely to always have a tendency to have it as each of the above causes tends to be a long-term problem.

Sometimes a 'vicious cycle' may play a part. For example, your eyelids may become slightly inflamed and sore, but not too bad. You may then rub them - which makes the inflammation worse. This in turn can lead to your eyelids becoming more sore. You may then keep rubbing them further, which leads to more inflammation, and so on.

What are the symptoms of blepharitis?

• The main symptom is sore eyelids. Both eyes are normally affected.
• The eyelids may look inflamed or greasy.
• The eyes may become 'sticky' with discharge. In particular, the eyelids may stick together in the morning.
• Sometimes tiny flakes or scales appear on the eyelids which look like small flakes of dandruff. Crusts may develop at the base of eyelashes.
• One or more of the tiny glands of the eyelids (meibomian glands) may block and fill with an oily fluid.

Symptoms often 'come and go'. Typically, symptoms flare up from time to time, but you may have long periods without any symptoms.

Three other conditions are commonly associated with blepharitis. So, you may also have one or more of these conditions. They are:

• Dry eye syndrome. This is especially if you have meibomianblepharitis when the tiny glands in the eyelids do not function as well as normal.
• Seborrhoeic dermatitis - described above.
• Rosacea. Symptoms include facial flushing, and persistent central facial redness.

What is the treatment for blepharitis?

There is no one-off cure as the inflammation tends to recur if you do not keep up with treatment. However, with regular treatment, symptoms can usually be eased and then kept to a minimum and prevented from flaring up. The main treatment is regular eyelid hygiene. Other treatments that may be needed include antibiotics, and treatment of associated conditions.

Regular eyelid hygiene

This is the most important part of treatment and prevention. The aim is to soothe the eyelids, 'unplug' any blocked meibomian glands and clear out any stagnant oily secretions from these glands, and to clean the eyelids of debris. This is a daily routine that consists of three parts - warmth, massage and cleaning. Remove any contact lenses before the following routine.

Warmth

The purpose of warmth is to soften the skin and any crusts attached to the eyelids. But also, to allow the oily secretions made by the meibomian glands to flow more freely. As with any type of oil, warming the oil made by the meibomian glands will make the oil more 'runny'. Therefore, warmth helps to 'unplug' any blocked glands and allow the oily secretions to flow more readily. Warmth applied to the eyelids for about five minutes is thought to do this.

The traditional method is to gently press on the eyelids with a flannel (facecloth) soaked in very warm water for 5-10 minutes. If the flannel cools, keep re-warming it in the warm water.

A popular alternative is to use a specially designed heat bag which you place over your eyes for about five minutes. For example, the EyeBag™which you can buy online. To get the heat bags hot you place them in a microwave for a short time. The advantage of a heat bag over a hot flannel is that the heat is retained for many minutes and so it keeps a constant warmth over the eyes. You can simply lie down and relax for five minutes with the bag placed over your eyes. (A hot flannel usually cools quickly.)

Massage

Massage the eyelids immediately after applying the warmth. Massaging helps to push out the oily fluid from the tiny meibomian glands.To massage the eyelids...

• Use your index or middle finger and sweep the pad (fingertip) of that finger from the inner corner of the eye along the eyelid to the outer corner of the eye.
• Start with the upper lid. Put the finger pad in the corner of the eye next to the nose, just resting on the eyelid above the lashes. Then sweep the finger gently but firmly along the eyelid to the outer end.
• Repeat this with the lower lid, placing the pad of the finger just below the lashes in the corner of the eye and sweeping outwards towards the temple.
• Repeat this sweeping massage action 5 to 10 times over about 30 seconds immediately following the warming.
• Massaging should neither to be too gentle nor too firm. It should be relatively comfortable and you should not press hard enough to actually hurt your eyeball under the closed lids. Always massage with the eyes shut.

Clean

After warmth and massage, clean the eyelids. This can be done by any of the following ways. There is a lack of research studies to say which is the best method, so use whatever you find most useful:

• The traditional way is to use a cotton wool bud that has been dipped in diluted baby shampoo. Just add a few drops of baby shampoo to a small cup of warm water so that the ratio of water to shampoo is about 10:1. Squeeze out excess liquid from the cotton bud to prevent drips getting into your eyes which may irritate. In particular, try to clean off any crusts at the base of the eyelids. After cleaning the eyelids with the cotton wool bud, wash off the shampoo from the eyelids with a flannel or cloth.
• Some people recommend using special eyelid scrubs that you can buy online such as Blephaclean, Lid Care Wipes, Blephasol & so on.

You should do the above routine - warmth, massage, clean - at least twice a day until symptoms settle. When the symptoms have eased, keep doing this routine once a day, every day, to prevent further flare-ups. If you are prone to blepharitis it is best to think of this as part of your daily routine - just like brushing your teeth. This is the best way to keep symptoms away, or to a minimum.

Antibiotic treatments

Antibiotic eye ointment or drops may be advised for a while if an eyelid becomes infected. If you are prescribed ointment, place it on the edge of the eyelid (not the eye) after cleaning the eyelid in the way described above. Antibiotic tablets are also commonly used for troublesome infected eyelids. Note: a three month course of antibiotics is typically used in the treatment of blepharitis.

For more information we can direct you to the NHS information website

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