Tear Osmolarity

The I-PEN® Tear Osmolarity System

The New Standard for Diagnosing Dry Eye Disease

I-PEN®, the world’s only portable diagnostic device to detect and measure the tear film osmolarity levels associated with marginal, mild, moderate, and severe Dry Eye Disease.

  • Quantitative measurement of osmolarity
  • Affordable point-of-care test
  • Quick and simple to use (Entire test can be done in seconds)
  • Reproducible, accurate, and reliable results
  • Uses Single-Use-Sensors (SUS)


The I-PEN® Tear Osmolarity System is a solid state electronic diagnostic device for the quantitative measurement of osmolarity (concentration of dissolved salts in solution) of human tears in normal and Dry Eye Disease patients..

The I-PEN®, used in conjunction with the I-PEN® Single Use Sensors (SUS), provides a quick and simple method for determining tear osmolarity of the tissues bathed in the tear film of the orbital tissues such as the palpebral conjunctiva. After approximately 2 seconds of contact with the eyelid tissue, the I-PEN® Tear Osmolarity system will display a quantitative tear osmolarity test result on the liquid crystal display (LCD) in units of mOsms/L. No calculations required. The I-PEN® Tear Osmolarity System utilizes an impedance measurement to provide an indirect assessment of osmolarity of the tear film of the eye.

The I-PEN® Tear Osmolarity System is designed for use as an in-practice screening device both for patients presenting with dry eye symptoms and for all pre-and post-surgical patients. In addition, the I-PEN® Tear Osmolarity System is an invaluable asset for monitoring the progress of dry eye treatment therapies. The I-PEN® Tear Osmolarity System is for professional in-vivo diagnostic use only.

The I-PEN® Tear Osmolarity System requires:

  • Single-Use-Sensors (SUS) sold separately
  • Replacement battery CR2032 (available at most retailers)

To Be Used In Conjunction With I-PEN® Single Use Sensors (SUS)

  • Designed for in-vivo use with I-PEN®
  • Accurate and reliable results
  • Individually wrapped for single use
  • Affordable
  • Box contains 50 sensors

For more information about the I-PEN® Tear Osmolarity System or to arrange for an in-office demonstration, please contact your local I-MED Pharma sales rep or customer service @ 514-685-8118 or 1-800-463-1008.

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