This document addresses the continuous monitoring of intraocular pressure (IOP).

Increased IOP is associated with a greater risk of developing glaucoma and disease progression, although glaucoma may occur with normal IOP. There are two major types of glaucoma, open-angle and closed-angle. Open-angle glaucoma is a chronic condition that progresses slowly over a long period of time. It is the most common type of glaucoma. Closed-angle glaucoma quickly develops and can cause painful and immediate vision problems.

Changes in IOP occur normally over the course of a day, with peaks in pressure reached during the night. It has been postulated that fluctuations in intra-ocular pressure are associated with the progression of glaucoma. Measurement of IOP can help lead to a diagnosis of glaucoma. However, the most commonly used tests for glaucoma (tonometry, ophthalmoscopy, perimetry, and gonioscopy) are limited to single points in time. Researchers are exploring the use of 24-hour monitoring of IOP as a means to measure fluctuations in IOP in order to assess and monitor treatment for glaucoma.  

Position Statement

Investigational and Not Medically Necessary:

The use of continuous monitoring of intraocular pressure is considered investigational and not medically necessary for all indications.