
Entropion will cause the lashes to rub on the eye, but this is not the same as the condition Blossom is refering too. She is refering to Distichiasis, where extra stray lashes rub against the eye, or float harmlesly in the tear film.
The effect is the same, but the conditons are quite different, one is an abnormal eyelid, the other excess misplaced lashes.
NB post edited to add (and correct spelling). thes extra lashes emerge from the Melbomian glands (an oil gland in the eye lid), as these are modified sebaecous (sp) glands which are normally associated with the hair follicles, it would seem that for soem reason they think they have to grow hair here too, when they shouldn't. This only becomes a problem if the hairs are thick or angled in such a way that they rub.
They can be plucked or removed by elecrolosis, but up to 20% will regrow, so it may have to be repeated. An operation to take out the gland responsible witll permanently solve the problem, but is obviously delicate surgery, adn would probably prevent the dog from being shown.