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What's in a tear?

ANSWER

What’s in a tear? They’re a mix of:

  • Water, for moisture
  • Oils, for lubrication
  • Mucus, for even spreading
  • Antibodies and special proteins that keep infection at bay

The ingredients come from special glands around your eye. Dry eyes often mean your tear system is out of whack.

SOURCES:

National Eye Institute.

University of California, Berkeley.

Review of Ophthalmology: “A Stepwise Approach to Treating OSD.”

Reviewed by Whitney Seltman on September 12, 2020

SOURCES:

National Eye Institute.

University of California, Berkeley.

Review of Ophthalmology: “A Stepwise Approach to Treating OSD.”

Reviewed by Whitney Seltman on September 12, 2020

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What happens when tears don’t provide enough moisture?

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