Sneezing in bright sunshine--how common is this?

I don't know how common this affectation is, but it happens to me--and I'd like to know some things about it.

I'm blue-eyed and had brown hair (though as a child it was even lighter-colored); I'm gray now. Anyway, the affectation that I have (I won't call it a disease since I don't see any disability arising from it) is that, if I have been in a room or setting of average brightness and step out into brilliant sunshine, within 30 seconds I sneeze--usually once, maybe twice, but no more. I don't have a "sun allergy"; I can stay outside and tan or burn as easily as average people and feel no ill effects. Is there a name for this phenomenon? Does anyone with eye colors other than blue have this as well?

Any and all information about this would be appreciated; again, I'm not suffering, I'm just curious since this has happened throughout my life, and as far as I know, I'm the only one affected by it.