Figure 3.

An original data tracing is shown that was produced while one glaucoma surgeon performed DOM in conjunction with the OPE.

Notes: The fluid-filled bladder was interposed between the surgeon’s fingertips and the subject’s closed eyelid. The numbers written on the graph are pressures in mmHg. The surgeon was first instructed to reproduce the magnitude of the compression they felt was typical for their ideal DOM maneuver while blinded to the IOPs they were inducing; from the left side of the tracing, this is the first four bracketed peaks labeled in cursive “how high he thinks”. Each compression has a pressure range and as such, a time-weighted mean pressure value. Subsequently, each surgeon was “coached’ while attempting to produce a target IOP of 90 mmHg (seen as the next two bracketed compressions labeled “guided” and a subsequent one labeled “± guided”). Another surgeon provided verbal feedback on the IOPs that were being produced while watching them on OPE’s strip chart recorder. After 5 minutes, the newly “trained” surgeon was asked to reproduce this target pressure, without the benefit of coaching, for three more compressions (the last three peaks seen at the far right of the figure, bracketed, and labeled “unguided”). All DOM was performed on human subjects with normal IOPs.

Abbreviations: DOM, digital ocular massage; IOP, intraocular pressure; OPE, ocular pressure estimator.