Tears are necessary for maintaining the health of the front surface of the eye and for providing clear vision.

Ever wondered what the function of a tear film is?

• It keeps the ocular surface lubricated, protecting the eye against injury
• It serves as a mechanism for removing debris on ocular surface
• It aids metabolism, secretion and waste removal from eye
• It provides nutrition to anterior surface cells
• It exerts antibacterial action by protecting against
  infection

However, when your eyes don’t make enough tears, or your eyes don’t work the right way, you can get dry eyes. Severe dry eyes may damage the front surface of the eye, result in a higher chance of infection and also impair vision.