So far medical requirements for aviators have been defined by national lice
nsing authorities. For a long while ophthalmological problems, insufficienc
ies in vision, refraction or color vision, have been responsible for approx
imately 50 % of rejection of applicants for medical reasons.
New international regulations proposed as well by ICAO as JAA try to lead t
o a new balance in these requirements. In general,ophthalmological requirem
ents now allow for lower standards, specifically in refraction, but also in
color vision. Also new examination methods are admitted. German and French
authorities have announced their opposition being concerned about flight s
afety for the future.