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2. Dry eye syndrome - Wikipedia

   en.wikipedia.org/wiki/Dry_eye_syndrome

   Dry eye syndrome can lead to blurred vision, instability of the tear film, increased risk of damage to the ocular surface such as scarring of the cornea, and changes in the eye including the neurosensory system. [2] [6] Dry eye occurs when either the eye does not produce enough tears or when the tears evaporate too quickly. [2]

3. Schirmer's test - Wikipedia

   en.wikipedia.org/wiki/Schirmer's_test

   Schirmer's test determines whether the eye produces enough tears to keep it moist. This test is used when a person experiences very dry eyes or excessive watering of the eyes. It can cause damage to the cornea. [1] A negative (more than 10 mm of moisture on the filter paper in 5 minutes) test result is normal.

4. Tear Film and Ocular Surface Society - Wikipedia

   en.wikipedia.org/wiki/Tear_Film_and_Ocular...

   Tear Film & Ocular Surface Society (TFOS) is a 501(c)(3) nonprofit organization founded in 2000 focused on facilitating consensus and standardization on ophthalmological research related to ocular surface subjects like tear film, dry eye, meibomian gland dysfunction and contact lens discomfort.

5. Artificial tears - Wikipedia

   en.wikipedia.org/wiki/Artificial_tears

   Artificial tears are lubricating eye drops used to relieve dryness and irritation of the ocular surface. [1] Dry eye syndrome (keratoconjunctivitis sicca) is a common ocular surface disorder and is characterized by disruption of the tear film and increased inflammation.

6. Tear break-up time - Wikipedia

   en.wikipedia.org/wiki/Tear_break-up_time

   Tear break-up time (TBUT) also known as tear film break-up time (TFBUT) is the time taken for the first dry spot to appear on the cornea after a complete blink. TFBUT measurement is an easy and fast method used to assess the stability of tear film. It is a standard diagnostic procedure in the dry eye clinics. [1]

7. Xerophthalmia - Wikipedia

   en.wikipedia.org/wiki/Xerophthalmia

   Xerophthalmia (from Ancient Greek xērós (ξηρός) meaning "dry" and ophthalmos (οφθαλμός) meaning "eye") is a medical condition in which the eye fails to produce tears. It may be caused by vitamin A deficiency, [1] which is sometimes used to describe that condition, although there may be other causes.