The tear ducts are called the lacrimal ducts. The duct that drains the tears from your eye (located in the nasal corner of the eye) is called the nasolacrimal duct.
Tear Ducts
Tear ducts do not form tears. Tears form from lacrimal glands. They are located above and to the right of the right eye and above and to the left of the left eye.
... tear ducts...
No...! But you can have two tear ducts in one eye but you have to be born with that... If you do have two only one works though.
Allergies can cause eye tearing but there is also other conditions that cause eye tearing. Allergy eyes usually have itching and tearing, not sole tearing. Infections, blocked tear ducts, and eye irritation are causes of tearing. Consult your doctor if you continue having issues.
Certainly, as long as they have functioning tear ducts. Generally vision problems are a result of structural problems with the eye itself or the optic nerve. The tear ducts have nothing to do with seeing.
A riboflavin (vitamin B2) deficiency is often the cause of bocked tear ducts: try taking a high potency B vitamin formula (B-100); some vitamin A & D might help clear up any infection as well.
Absolutely. Without them you need to continuously use artificial tears to keep the eye lubricated and clean.
The white spots that you are seeing in the corners of each of your eyes are your tear ducts. These ducts are what produces the water or tears that come out of your eyes when you cry or get something in your eye.
It's debatable. See the YouTube video below in the related links.Yes, I've heard it is when they catch a prey, but that doesn't appear to be the case here:http://www.youtube.com/watch?v=zk1mAd77Hr4
In this case, you'd have to define 'hot'. Tears come out of the tear ducts in the eye are the same temperature as your body (roughly 98-99 degrees).