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Lt. Col. (Doctor) Daniel Perala, 379th Expeditionary Medical Group optometrist, measures the pressure of a patient's eye using a Goldmann aplanation tonometer in Southwest Asia, Nov.2 , 2009. The optometry clinic provides anything from routine exams to emergency eye care. Doctor Perala is deployed from the Wyoming Air National Guard in support of operations Iraqi Freedom and Enduring Freedom. (U.S. Air Force Photo/Tech. Sgt. Jason W. Edwards)
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