What Are Tears?
What Are Tears? Tears are made of salt water, as you will know if you have ever licked a finger after wiping them away. They happen when the gland which provides...
Read MoreWhat Are Tears? Tears are made of salt water, as you will know if you have ever licked a finger after wiping them away. They happen when the gland which provides...
Read MoreWhat Is a Squint? A squint, or strabismus, is the name given to a condition in which both eyes do not point in the same direction. Whilst one eye looks straight ahead,...
Read MoreWhat Are Our Eyes Made Of? The outer shell of the eyeball is made up of three coats: the fibrous tunic, composes of the cornea and sclera. The middle layer, known as...
Read MoreHow Many Eyelids Does a Camel Have? A camel’s large, dark eyes are protected by three eyelids. The two outer eyelids have long, thick eyelashes that protect the...
Read MoreDo Birds Have a Third Eyelid? Birds have a special “third eyelid” in the corner of each eye close to the beak. This extra eyelid is called the nictitating...
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