ATPL: The ability of the human eye to read alphanumeric information:
Domanda 146, Human Performance and Limitations - ATPL - Airline Transport Pilot license
| Is limited to the foveal area of the retina |
| Is governed by peripheral vision over an area of approximately 20 degrees of angle |
| Is almost equally shared by the entire retina |
| Is limited to daytime using the rod cells |
