Slight thread derail here, I've so far not been able to find a pair of sunglasses or riding glasses that fit my slim face and it's starting to annoy me, wet road rides and trail centres are the worst.
Well, according to Oakley you then have 'Condensed Cranial Geometry'
Oakley Fives are the only ones I am aware with a narrow fit (other than the Asian Fit stuff but that may have other issues.
A cheaper alternative I use that suit a narrower fit is a pair of 'Dirty Dog' Fudge polarised glasses. Not sports specific but I haven't had an issue with them fogging up.