A Schirmer's test is a non-invasive test that determines whether a person's eye produces enough tears to keep their eye moist and healthy. Your doctor places a sterile piece of filter paper inside the lower eyelid of both eyes and the you will be asked to close your eyes.
The filter paper is removed after a few minutes and your doctor then assesses how far the tears have travelled on the paper.
A normal level of production is considered to be over 10 millimeters (mm) of tears on the paper. Anything under 10 mm is considered to be an abnormally low level of tear production. A measurement of less than 5 mm is considered severe dry eye.
Preparation for the Schirmer's test is minimal and simple. You will need to remove your contact lenses or glasses while undergoing the test. Numbing drops may be administered if you are uncomfortable with something touching your eye.
Your doctor places the strip of paper inside your lower eyelids and you will be required to keep your eyes closed for 5 minutes. You might feel mild irration and discomfort with the paper touching your eyes.
You should not rub your eyes 30 minutes after the test. You should also refrain from wearing contact lenses for about 2 hours following the test. Should you feel unwell or experience redness, itching or vision blurriness, contact your doctor immediately or call our 24-Hour Medical Urgency Clinic.
