Skip to main content
Home » Dry Eye » Dry Eye Treatment » I-PEN – Osmolarity Assessment

I-PEN – Osmolarity Assessment

I-MED Pharma’s I-PEN® Osmolarity System is the first quick, easy, and handheld device for optometrists to screen dry eye patients.


  • Quantitative measurement of osmolarity
  • Affordable point-of-care test
  • Quick and simple to use (takes less than 5 seconds per eye)
  • Reproducible, accurate and reliable results
  • Uses Single-Use-Sensors (SUS)

The I-PEN measures tear osmolarity in a fast and effective way, aiding doctors in determining the best treatment for your eyes.

Tear osmolarity has been shown to have the best predictive value for diagnosing Dry Eye Disease of any single test.

The Doctor will test both eyes, and will take the highest number of the two tests, to generate Your Osmolarity Number.

Your Osmolarity Number gives doctors a meaningful measure of the health and stability of the protective tear film that covers the surface of your eyes. The number generated correlates with the severity of the disease.


Please note that any pick up order, adjustments, eye exams and frame selection are by appointment only.

Please click here to read our new office protocols

Of course if you need to contact the office about any emergency matters during this time please email us at with details and we will get back to you as soon as possible. These emergencies would include sudden changes to vision or ocular injuries. We will also be checking our voicemails on a regular basis.

Lastly, to order contact lenses and other products please click here

Thank you for your understanding, we are looking forward to seeing you soon.