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Recent Posts by Barbara Shykoff

What’s All the Fuss about CO2 in Breathing Gas?

February 28, 2018

What’s All the Fuss about CO2 in Breathing Gas?

The acceptable level of inspired carbon dioxide (CO2) in diving gear is a controversial topic. Some current standards1,2 permit up to 20 mBar (2 kPa, 2% SEV) as the average inspired CO2 partial pressure, while []

Hyperoxic Myopia: Information for Divers

October 19, 2017

Hyperoxic Myopia: Information for Divers

Exposure to excessive oxygen can impair distance vision.

This phenomenon, called hyperoxic myopia, is a form of oxygen toxicity that affects the lenses of the eyes.1,2 It is a known risk of hyperbaric oxygen treatment []

Why UPTD Calculations Should Not Be Used

May 29, 2017

Why UPTD Calculations Should Not Be Used

Just over 45 years ago, in 1970, researchers at the University of Pennsylvania used the best information available at the time to derive a model for development of pulmonary oxygen toxicity.1,2 The measurement  they used []

Oxygen Seizures at PO<sub>2</sub> ≤ 1.6 Bar: How Rare?

March 27, 2017

Oxygen Seizures at PO2 ≤ 1.6 Bar: How Rare?

Central nervous system (CNS) oxygen toxicity literally means the poisoning of the brain by too much oxygen. CNS oxygen toxicity is very scary, particularly in the water, where any of the signs or symptoms poses []

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Upcoming Dive Shows

Shearwater Research will be at the following dive shows:

DC SCUBA SHOW 2019

Read More / Feb 22-23 Booth No. 205

OZTEK 2019

Read More / Mar 16-17 Hall 5 Booth No. 37

BENEATH THE SEA 2019

Read More / Mar 29-31 Booth No. 215/314

MARINE DIVING FAIR (マリンダイビングフェア2019)

Read More / Apr 5-7 TBC (ダイビングギアメーカーゾーン)

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ADEX SINGAPORE 2019

Read More / Apr 12-14 Q7

DRT SHANGHAI 2019

Read More / Apr 12-14 Booth No. D148

SFO SCUBA SHOW 2019

Read More / Apr 26-27 Booth No. 45

DRT TAIWAN 2019

Read More / May 31 - Jun 2 A71