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Long-term contact lens use can lead to alterations in corneal thickness, stromal thickness, curvature, corneal sensitivity, cell density, and epithelial oxygen uptake, etc. Other changes may include the formation of epithelial vacuoles and microcysts (containing cellular debris) as well as the emergence of polymegethism in the corneal endothelium.
High-g training is done by aviators and astronauts who are subject to high levels of acceleration (' g '). It is designed to prevent a g-induced loss of consciousness (g-LOC), a situation when the action of g -forces moves the blood away from the brain to the extent that consciousness is lost. Incidents of acceleration-induced loss of ...
Ballistic eyewear. Ballistic eyewear is a form of glasses or goggles that protect from small projectiles and fragments. For the U.S. military, choices are listed on the Authorized Protective Eyewear List (APEL). [ 1] Ballistic eyewear including examples that meet APEL requirements are commercially available for anyone who wishes to buy it.
Blast-related ocular trauma comprises a specialized subgroup blast injuries which cause penetrating and blunt force injuries to the eye and its structure. The incidence of ocular trauma due to blast forces has increased dramatically with the introduction of new explosives technology into modern warfare. The availability of these volatile ...
Exercise Red Flag (also Red Flag – Nellis) [ 1] is a two-week advanced aerial combat training exercise held several times a year by the United States Air Force (USAF). It aims to offer realistic air-combat training for military pilots and other flight crew members from the United States and allied countries.
Computer vision syndrome. Computer vision syndrome ( CVS) is a condition resulting from focusing the eyes on a computer or other display device for protracted, uninterrupted periods of time and the eye's muscles being unable to recover from the constant tension required to maintain focus on a close object.
Military camouflage is the use of camouflage by an armed force to protect personnel and equipment from observation by enemy forces. In practice, this means applying colour and materials to military equipment of all kinds, including vehicles, ships, aircraft, gun positions and battledress, either to conceal it from observation ( crypsis ), or to ...
The United States Air Force Security Forces ( SF) are the ground combat force and military police service of the U.S. Air Force and U.S. Space Force. [ 7] The USAF Security Forces were formerly known as Military Police ( MP ), Air Police ( AP ), and Security Police ( SP) at various points in their history.