The metal patch was first discovered in 1991 on the atoll, according to TIGHAR, and was placed on Earhart's plane during a stop in Miami in 1937. The Miami Patch was an expedient field repair, Ric Gillespie, executive director of TIGHAR, told Discovery News.
Synthetic vision system. A modern synthetic vision system produced by Honeywell. A synthetic vision system (SVS) is a computer-mediated reality system for aerial vehicles, that uses 3D to provide pilots with clear and intuitive means of understanding their flying environment.
The most common way is to perform LASIK or an ASLA procedure, where one eye is focussed for distance and one for near vision. If monovision is achieved via a surgical lens procedure, one artificial lens set for distance vision will be implanted, while the other lens will be set for near vision. In some cases, only one eye will need to be adjusted to create monovision/blended vision.