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Study: Single-use tonometers compare well with Goldmann

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FLORENCE, Italy — Single-use tonometers can provide IOP measurements comparable to Goldmann applanation tonometers, according to a British study presented here at the European Glaucoma Society meeting.

The study, conducted by Anna Maino, MD, and colleagues at Manchester Royal Eye Hospital, compared two single-use tonometers, the Tonosafe from Clement Clarke and the TonoJet from Luneau, to Goldmann tonometry in 56 consecutive patients.

Mean IOP measurements did not differ significantly among the three tonometers. Goldmann tonometry measured a mean IOP of 12.9 mm Hg, Tonosafe measured 12.5 mm Hg and the TonoJet measured 12.4 mm Hg.

A reliability test showed the three systems to yield consistent measurements as well, Dr. Maino said.

These single-use devices could be advantageous for use during emergency situations or in instances when infection or pathogen transmission is a concern, Dr. Maino added.