Schirmer's test

- Definition:

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 poses no risk to the subject. 

A negative (more than 10 mm of moisture on the filter paper in 5 minutes) test result is normal. 

Both eyes normally secrete the same amount of tears.

It is named for Otto Schirmer.

- Conditions:

Dry eyes can occur from conditions such as:

● Aging

● Dehydration

● Corneal ulcers and

● infections Eye infections (for example conjunctivitis)

● Vitamin A deficiency

● Sjögren's syndrome

● Secondary tearing deficiency (associated with disorders such as - lymphoma, leukemia, GVHD (graft vs. host disease, after a transplant), andrheumatoid arthritis)

● As a temporary or permanent side effect of LASER vision correction surgery such as LASIK or PRKThe inability of tears to drain into the nose can occur with:Some eye infections Blockage of the tear duct

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