September 2009 Advertorial Return to Homepage

DISCUSSION 3

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Dr. Boyer: The intraocular pressure (IOP) control with the CONSTELLATION system is phenomenal. In the past, we routinely experienced hypotony as the scleral depression was relaxed; however, the fluidics on the CONSTELLATION system help maintain IOP within approximately 2 mm Hg. With previous technology, I typically perform vitreoretinal procedures beginning with an IOP of approximately 40 mm Hg to allow for fluctuation and to lower the risk of hypotony. With the CONSTELLATION, I set the IOP at 20 mm Hg.

Dr. Kaiser: Another factor that has a role in IOP control is fragmatome placement. When there is an occlusion with a nuclear fragment, breakage can cause a massive sudden surge of fluid out of the eye and subsequent hypotony. For older patients, there can be a high risk of choroidal hemorrhage, but this is not an issue with the CONSTELLATION system and its excellent IOP control. The system constantly monitors the IOP so that if an occlusion break occurs, the fluidics automatically adjusts to protect against hypotony.

Dr. Rizzo: The IOP control system on the CONSTELLATION works quickly. I found that drops in pressure lasted merely milliseconds before the IOP returned to the original level.

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