<prompt> Lysozyme and lactoferrin are present in which layer of tear film:-Mucous layerAqueous layerLipid layerAll the layers  <response>: Lysozyme and lactiferrin are present in aqueous layer Aqueous layer Produced - 95 by main lacrimal gland 5 by accessory lacrimal gland of Krause and Wolfring Average aqueous tear flow - 1.2 ml min Normal thickness - 7 mm Composition: -Water 98 -Lysozyme -Tear specific prealbumin -Immunoglobulin A -Other proteinslactoferrin Function: -Hydration -Lubrication -Antimicrobial action -Oxygenation -Mechanical debris removal 