Although we have a field of vision of more than 180° it is important during flight to use the scanning technique, because: - ATPL

Question id 103 - Human Performance and Limitations - ATPL - Airline Transport Pilot license

It is tiring to look continually in the same direction

Only in the peripheral area of the retina resolution is good enough to see an object clearly

Only in the foveal area resolution is good enough to see an object clearly

The reduction in the field of vision with decreasing altitude is due to a lack of vitamin A