How Does Tear Film Osmolarity Work?
The I-PEN® 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® Osmolarity system, used in conjunction with the I-PEN® Osmolarity 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 papabral conjunctiva. After approximately 2 seconds of contact with the eyelid tissue, the I-PEN® 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® Osmolarity Test utilizes an impedance measurement to provide an indirect assessment of osmolarity of the tear film of the eye.
The I-PEN® 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® is an invaluable asset for monitoring the progress of dry eye treatment therapies. The I-PEN® is for professional in-vivo diagnostic use only.
The I-PEN® requires:
- Single-Use-Sensors (SUS) sold separately
- Replacement battery CR2032 (available at most retailers)