aircraft disappearing against terrain.

[Blackdog_kt]

Originally Posted by Heliocon

Yep you are correct. I do alot of diving and am kinda known for my excellent eyesight, even though it sucks horribly and I have to wear glasses to drive. Why? Because I have excellent vision, especiall for movement. Thats what you need when you are looking for a cuttlefish or octopus. Also a tip, dont look excactly where you think the plane is, just hold steady because your peripheral vision is actually much more sensitive to movement than what you are directly looking at (for picking up movement).

Now that's weird, i also use a similar method to pick up contacts and i also wear glasses.
Maybe people who wear glasses and have to look through a somewhat narrow field of view for the majority of everyday tasks have a more pronounced reflex reaction to movement outside it, who knows. Or maybe it's just that four eyes are better than two