99th Aerospace Medicine Optometry

U.S. Air Force Master Sgt. David Sims, 57th Aircraft Maintenance Squadron first sergeant, has his eyes checked by Capt. (Dr.) William Catt, 99th Aerospace Medicine chief of aerospace optometry, June 7, 2013, at Nellis Air Force Base, Nev. Catt uses a magnifier, which intensifies the light into the eye and aids the doctor as he looks for diseases in the eye. (U.S. Air Force photo by Senior Airman Daniel Hughes)

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99th Aerospace Medicine Optometry

Master Sgt. David Sims, 57th Aircraft Maintenance Squadron first sergeant, has his eyes evaluated by a wavefront aberrometer during a routine eye exam June 7, at Nellis Air Force Base, Nev. The wavefront aberrometer measures the way a wavefront of light passes through the cornea and the crystalline lens, which are the light-focusing components of the eye. (U.S. Air Force photo by Senior Airman Daniel Hughes)

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99th Aerospace Medicine Optometry

U.S. Air Force Capt. (Dr.) William Catt, 99th Aerospace Medicine chief of aerospace optometry, checks the vision of Master Sgt. David Sims, 57th Aircraft Maintenance Squadron first sergeant, during a routine eye exam June 7, 2013, at Nellis Air Force Base, Nev. Catt is watching Sims’ eye as he tracks the stick to see how well the eyes work together. (U.S. Air Force photo by Senior Airman Daniel Hughes)

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99th Aerospace Medicine Optometry

U.S. Air Force Capt. (Dr.) William Catt, 99th Aerospace Medicine chief of aerospace optometry, dials in a phoroptor at the Optometry Clinic in the Michael O’Callaghan Federal Medical Center June 7, 2013, at Nellis Air Force Base, Nev. The phoroptor is commonly used by eye care professionals during eye examinations to determine their eyeglass prescription. (U.S. Air Force photo by Senior Airman Daniel Hughes)

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99th Aerospace Medicine Optometry

U.S. Air Force Master Sgt. David Sims, 57th Aircraft Maintenance Squadron first sergeant, waits for Capt. (Dr.) William Catt, 99th Aerospace Medicine chief of aerospace optometry, to complete his examination during an annual eye exam June 7, 2013, at Nellis Air Force Base, Nev. If the eye exam determines that your eyesight has changed, the optometrist will prescribe new glasses. (U.S. Air Force photo by Senior Airman Daniel Hughes)

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99th Aerospace Medicine Optometry

U.S. Air Force Staff Sgt. Christopher Hutchinson, 99th Aerospace Medicine optometry flight chief, cleans the dust off lenses June 7, 2013, at Nellis Air Force Base, Nev. The lenses help the eye care professional select the correct prescription for patients’ eyes. (U.S. Air Force photo by Senior Airman Daniel Hughes)

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99th Aerospace Medicine Optometry

The lenses that help determine new prescriptions for patients are cleaned thoroughly before use June 7, 2013, at Nellis Air Force Base, Nev. The optometrist will select lenses from the case, which will help in the selection of new lenses for the patient. (U.S. Air Force photo by Senior Airman Daniel Hughes)

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USAF. (U.S. Air Force Graphic by Rosario "Charo" Gutierrez)

99th Aerospace Medicine keeps eyes on mission

Published June 11, 2013

USAF. (U.S. Air Force Graphic by Rosario "Charo" Gutierrez)

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99th Aerospace Medicine Optometry

99th Aerospace Medicine Optometry

99th Aerospace Medicine Optometry

99th Aerospace Medicine Optometry

99th Aerospace Medicine Optometry

99th Aerospace Medicine Optometry

99th Aerospace Medicine Optometry