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Why do you think there is a need for three layers in a film
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Why do you think there is a need for three layers in a film

User Obiwankenoobi
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Answer:

When our tear film becomes unstable, symptoms of Dry Eye can occur. OUR TEAR FILM HAS THREE LAYERS. Our tear film is made up of three layers – an oil (lipid) layer, a water (aqueous) layer and a mucin layer. ... Its main purpose is to seal the tear film which helps reduce evaporation of our natural tears.

User Tessafyi
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