Your eyes need tears to keep them moist and healthy. Tears are produced by tear glands (lacrimal glands), which are underneath your upper eyelids, in the corner furthest away from your nose. When you blink, the tears from your tear glands are spread thinly all over the surface of your eye.
The tears drain away through tiny openings called puncta on the edge of your eyelids, near your nose. From here, they run through tear ducts into your nose and mouth.
If a problem occurs anywhere in this process, it can cause your eye to water and tears to run down your cheek.
Producing tears without cause, for example, when you're not upset or emotional, is the main symptom of watering eyes. You may only have the odd trickle down your cheek or tears may start rolling down your face. Other symptoms may include:
Watering eyes are caused either by conditions where you produce too many tears, or by conditions where your tears can't drain away properly. If you're producing too many tears this is called lacrimation. If your tears aren't draining away properly this is called epiphora.
There are a number of conditions that can cause your body to produce too many tears. Some of the main ones are listed below.
However, your eyes can become sore because of this, which can cause a reaction in your tear ducts making them overproduce tears.
Your eyes have a drainage system of tear ducts to take away your tears. If this drainage system becomes blocked or isn't working properly, it can cause your eyes to water. Tear ducts can become blocked if they are infected or inflamed, or as part of the ageing process or because of a blockage at the point where the tears drain out in your nose.
A blockage can lead to a condition called dacryocystitis. This is where an infection develops and causes a sometimes painful swelling in the corner of your eye near your nose. Injuries can cause scar tissue which can also block tear ducts. Some babies are born with blocked tear ducts, which usually get better in their first year.
If your tear duct openings aren't in the right place, for example if you have a condition called ectropion where your eyelid droops away from your eye, then your tears may not drain away properly.
If you think you have watering eyes, you should visit your GP. He or she will ask about your symptoms and examine you. You GP may also ask you about your medical history.
If you have any discharge or pus coming from your eye, your GP may take a swab of it to see if you have an infection.
Your GP may refer you to an ophthalmologist, a specialist who identifies and treats eye conditions (including surgical treatments). He or she may arrange for you to have further tests.
The type of treatment you have will depend on what is causing your eye to water. If your symptoms are mild, you may not need any treatment. Babies that are born with blocked tear ducts may not need any treatment.
Keep the area around your eye and eyelids clean and clear of any crusting or stickiness. Using a hot compress can help to ease your symptoms. Put a warm compress over your eyelid for a few minutes. Use a towel soaked in hot water to make the compress. The water you use shouldn't be scalding hot - the compress should feel comfortable on your skin.
If you have a mild infection, your GP may prescribe antibiotic eye drops or ointment. If your infection is more severe, your GP may prescribe antibiotic tablets. Dry eyes may need to be treated with artificial tears to keep the surface of the eye healthy - this will stop excessive tears from being formed and your eye from watering.
This procedure can be used to open up and clear any narrowing of the tear duct openings in your eyelids. Your ophthalmologist will put a few drops of a local anaesthetic into your eye to numb the area. He or she will then use a fine stainless steel pointed instrument to open up the openings of your tear ducts in your eyelids. Local anaesthetic completely blocks feeling from your eye area and you will stay awake during the procedure.
Sometimes the blockage is further down in your tear duct. Lacrimal syringing can be used to help determine where the blockage is. This is carried out under local anaesthesia. A local anaesthetic completely blocks feeling from your eye area and you will stay awake during the procedure. Your ophthalmologist may put some harmless yellow dye into your eye before syringing - this can help him or her decide whether the tear ducts are blocked.
Your doctor will put a very thin metal tube into your tear duct. This is connected to a syringe of salt water. He or she will wash the salt water through your tear duct to help remove the blockage or determine its location. When your doctor is doing this you may be able to taste salt in your mouth or feel it in your nose.
If your tear ducts are blocked and other treatments don't work, you may be offered surgery to unblock the ducts and widen the tear duct opening your nose. The operation is called a dacryocystorhinostomy, or DCR. You may need to have special X-rays of the tear ducts before your surgery to help establish exactly where the blockage is and whether the surgery is likely to work.
A DCR operation can be done in two different ways. Your surgeon can get to your tear duct by going up through your nose using special instruments, or he or she can make a cut in the skin at the side of your nose.
Whatever the method, your surgeon will make a small hole in the bone between the tear sac and your nose. He or she will place small tubes in the hole to help it heal properly and to make sure the hole stays open. Your surgeon will take these tubes out a few weeks later.
Your surgeon may prescribe antibiotic eye drops and tablets to take after your operation, to help prevent an infection.
See our video about watering eyes:
Some babies are born with tear ducts that are either blocked or haven't opened properly. This causes a baby's eyes to water, and sometimes they have a sticky discharge or fluid. Tear ducts usually open up without any treatment within the first year of a baby's life.
When a baby is born, his or her tear ducts should open up on their own. However, about six out of 10 babies are born with tear ducts that are either blocked or don't open properly. These blocked tear ducts will cause a baby's eyes to water, and sometimes to have a sticky discharge or fluid.
Tear ducts usually open up without any treatment and any symptoms will stop within the first year of a baby's life. However, about one in 20 babies will continue to have symptoms after their first birthday.
If your baby has watering, sticky eyes you can keep them clean and clear of stickiness by gently bathing them in cooled, boiled water. Your GP may also show you a way of massaging the affected area to help unblock the tear duct. Antibiotic eye drops may be prescribed if your baby has an infection.
Rarely, if these treatments don't work, or if the tear ducts don't open up naturally, your baby may need an operation to open the tear ducts. This usually involves widening the openings of the tear ducts in the eyelids and passing a fine metal wire into the tear ducts to relieve any blockage.
Bathing your eyes and using hot compresses and massage can help to relieve your symptoms. However, you will need to see your GP to get a diagnosis and get the correct treatment.
Keeping your eyelids clean, and using a hot compress followed by massage can help to ease your symptoms and prevent infection.
You can clean your eyelids using a small amount of baby shampoo or baking soda diluted in water. Apply it with a cotton bud along the edge of your eyelid and rinse. This will help to remove any crusting or stickiness.
A hot compress followed by an eye massage may help remove a blockage in your tear duct. Put a warm compress over your eyelid for a few minutes. Use a towel soaked in hot water to make the compress. The water you use shouldn't be scalding hot - the compress should feel comfortable on your skin.
Then gently massage the area by rolling your finger in a circular motion around any swelling. You should do this for about a minute. The massage may help to remove a blockage and release the trapped fluids.
People with hay fever have an allergy to pollen. This means that when they come into contact with pollen in the air, it causes a response in their body that makes their eyes water.
If you have hay fever, it means that you're allergic to pollen from grasses, weeds or trees, and also possibly to spores from moulds that are carried in the air. Pollen and spores are allergens - some people have an allergic reaction to them. Most people with hay fever have symptoms during the spring and summer months.
An allergic reaction happens when your body's immune system reacts to an allergen such as pollen, because it mistakes the allergen for a harmful invader such as a virus. Hay fever is the result of your immune system overreacting to pollen, which is harmless to most people.
Pollen gets into your eyes and irritates the sensitive lining, which causes your eyes to water. Your eyes may also be red and feel itchy.
You can control hay fever by avoiding pollen as much as you can. Keeping doors and windows closed during the day and showering and washing your hair after you have been walking or gardening will help to reduce your symptoms. You can also splash your eyes with cold water regularly. This will help flush out any pollen and should soothe and cool your eyes. Wear sunglasses when you're outdoors to protect your eyes.
Antihistamines can help to ease watering eyes and other symptoms of hay fever. They work by stopping many of the effects of histamine - this is one of the chemicals your body releases during an allergic reaction. Your GP may also prescribe eye drops containing steroids, which can ease your symptoms. You should start taking these two or three weeks before the pollen season starts.