MCCHORD AIR FORCE BASE, Wash. -- A patient peers through a phoropter March 15 during a visit to the base optometry clinic. A phoropter is an instrument commonly used by optometrists during an eye examination to measure an individual's refractive error and determine his eyeglass prescription. (U.S. Air Force photo/Abner Guzman)
No camera details available.
This photograph is considered public domain and has been cleared for release.
If you would like to republish please give the photographer appropriate credit.
Further, any commercial or non-commercial use of this photograph or any other
DoD image must be made in compliance with guidance found at
which pertains to intellectual property restrictions (e.g., copyright and
trademark, including the use of official emblems, insignia, names and slogans), warnings
regarding use of images of identifiable personnel, appearance of endorsement, and related matters.