Ocular Decompreion Device: Liquid Mercury Balloon v the Tungten Powder Balloon

Purpoe To determine if an intraocular preure (IOP)-reducing device containing tungten powder decreae preure comparably to the traditional mercury-containing apparatu. Deign Propective randomized, ingle-blind, controlled, phae I equivalence tudy. Method At a tertiary care center, both eye of 24 volunteer with normal IOP were treated with an ocular compreion device containing either liquid mercury or tungten powder. The IOP wa meaured at baeline and after 10 minute of ocular compreion. Reult The mean reduction in IOP wa 3.6 mm Hg ± 2.0 with the mercury-containing device and 4.4 mm Hg ± 2.1 with the tungten-filled apparatu. An equivalence tudy analyi uing a paired t-tet and a equential analyi protocol did not demontrate a tatitically ignificant difference between the IOP-lowering effect of the two device. Concluion The IOP-lowering effect produced by a tungten powder-filled balloon ocular decompreion device compared with a traditional mercury-containing device wa not tatitically different.