MRCP UK EXAMINATIONS

Detailed explanation-1: -Tears are composed of three layers: the outermost lipid layer, the middle aqueous layer and the innermost mucus layer.

Detailed explanation-2: -It can conceptually be thought of as having three major layers – inner mucin, middle aqueous, and outer lipid layer. The main lacrimal glands produce most of the aqueous tear layer, with small amounts produced by the goblet cells in the conjunctiva and accessory lacrimal glands.

Detailed explanation-3: -Our tear film is made up of three layers – an oil (lipid) layer, a water (aqueous) layer and a mucin layer. These three layers work together to help maintain the health of our eyes and ward off infection.

Detailed explanation-4: -The innermost layer of the tear film is the mucous layer, which consists of secreted mucins, electrolytes, and water produced by the conjunctival goblet cells.

Detailed explanation-5: -The oily outer layer keeps tears from drying up too quickly and makes the surface of the eyes smooth. The watery middle layer keeps the eyes wet and nourishes the eye tissue. The inner mucus layer helps the tear film stick to the surface of the eyes.