MEDICAL EVIDENCE PET SCAN 1DAMAGE OF MY EYES AND HEAD AS RESULT OF DIRECTED LASER BEAMSThis problem is even effecting airline pilots the Unions say the Government should be doing more to alert them to incidents involving lasers and to provide guidance about how best to protect themselves against laser beams that can blind. At least eight recent incidents involve lasers being pointed at aircraft cockpits as they approached for landings. The government should have a way to alert pilots so they can take precautions. Federal Aviation Administration spokeswoman Laura Brown said the agency is very concerned about the safety of pilots, passengers and the rest of the flight crew.An FAA study released in June found that most pilots subjected to a laser flash in a simulator reported temporary visual impairment and brief distraction.\nOf the hundreds of cases in the past in which airplane cockpits have been illuminated by lasers, none resulted in an accident, the study said. The study concluded that \"a laser attack could be quickly deployed and withdrawn, leaving no obvious collateral damage or projectile residue, and would be difficult to detect and defend against.\" A laser that\'s powerful enough could blind flight crews, resulting in a crash, the study said.\nThe FBI andHomeland Security Department sent a memo to law enforcement agencies last month saying evidence indicates terrorists have considered using lasers as weapons. But federal officials have found no evidence the current incidents are part of a terrorist plot.\nBreslin said pilots have some guidelines forwhat to do if hit with certain kinds of lasers. For example, if they see a red or green light, they can shield their eyes. Different protections are used for different kinds of lasers, and pilots want to know what they are, he said. Ultraviolet beams, for example, can be filtered out with sun shades. Shaoul Ezekiel, Massachusetts Institute of Technology professor emeritus of laser science, said a \"pulse\" laser that emits a short burst of light is especially dangerous because there\'s no chance for pilots to look away. \"For pulse lasers, you haven\'t got a chance,\" Ezekiel said. \"All it takes is one blast and it\'s too late.\" John Nance, a former pilot and aviation safety consultant, said military-grade lasers can actually punch through the back of the retina and kill the victim by causing a cerebral hemorrhage.\n\nThe Below Information Taken From Laser Physics and Technology:Eye protection is an important type of measure in the context of laser safety, as the eyes are particularly sensitive to laser radiation and at the same time particularly important. Different kinds of laser radiation can cause different types of damage. Most important is damage of the retina as most often caused by excessive irradiation in the visible or near-infrared spectral range, but there can also be damage of the cornea or the lens caused by mid-infrared light (causing overheating) or ultraviolet light (causing cataracts of the eye\'s lens).Different kinds of eye protection are required when working with dangerous light sources. A first approach should target the source, preventing dangerous beams from hitting the face in the first place. However, this may often not be achieved with the required certainty. Therefore, it is often necessary to use additional eye protection with special kinds of laser safety glasses (also called safety goggles). These contain absorbing filters and/or multilayer structures (dielectric coatings) which operate as Bragg mirrors for certain wavelengths. EVIDENCE, MEDICAL, PET, SCAN