The orbit also contains the lacrimal gland that’s located beneath the outer portion of the upper eyelid. The lacrimal gland produces tears that assist lubricate and moisten the attention, in addition to flush away any overseas matter which will enter the attention. The tears drain away from the eye by way of the nasolacrimal duct, which is situated on the internal corner of the eye. Vision is by far essentially the most used of the five senses and is certainly one of the main signifies that we use to assemble info from our surroundings. More than 75% of the knowledge we obtain concerning the world round us consists of visible data.