So both my lashes are long and the same thickness but when I look in the mirror and pay attention to them the lashes on the right are longer then the lashes on the left eye. Does anyone know why?

UPDATE: I sleep on my right side and the lashes on my right eye for some reason are longer than the ones on my left eye. I put caster oil on on both of my lashes at night and I even tried to just but caster oil on my left eye and nothing . . . its driving me insane.