Considerations in Contact Lens Use Under Adverse Conditions Proceedings of a Symposium (1991) / Chapter Skim
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Extended-Wear Lenses: The U.S. Navy's Experience
Extended-Wear Lenses: The U.S. Navy's Experience
Pages 159-165
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From page 159... ...
The risks associated with extended-wear contact lenses are significantly different for each group, with the latter also having the heightened probability of foreign bodies under the lens, lens displacement, and lens loss. The high-performance jet pilot, the astronaut, and the deep-sea diver will each experience markedly different environments that will affect their ability to wear contact lenses and the performance of the lenses in those particular environments.
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From page 160... ...
That results in increased swelling and a high probability of contact-lens-related complications. In addition to the Air Force and Army's operational scenarios, we must keep in mind that special combat units operating at high mountain altitudes in the cold are exposed to a reduced partial pressure of oxygen as well as the effects of the cold.
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From page 161... ...
Careful screening and patient education are absolutely vital to avoid problems during an operational situation. Regardless of whether hydrogel or RGP lenses are used by military personnel on an extended-wear basis, they need to have spare lenses, lens care solutions that are appropriate, and access to appropriate health care professionals.
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From page 162... ...
SOURCE: Naval Submarine Medical Research Laboratory, Special Report 83-1, June 1, 1983. lens care systems play a vital role in the success of the contact lens wearer.
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From page 163... ...
The Type 18 periscope, which is found on the Los Angeles Class 688 attack submarines, corrects to plus or minus approximately 4.5 diopters. The entrance requirements to submarine service allow refractive spherical equivalent to plus or minus 5.5 diopters.
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From page 164... ...
As a matter of fact, there have been no significant medical events in the time period that this program has been a fleetwide program—from about 1985, when it was initiated. In a study of submariners fit for contact lenses both under the Navy program and by non-Navy fitters, it was concluded that the risks associated with contact lens wear by submariners were low (Ulrich, 1987~.
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From page 165... ...
Socks 1987 Effects of Hyperbaric Conditions on Corneal Physiology With Hydrogel Contact Lenses. Naval Submarine Medical Research Laboratory.
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