Yes, good vision in contact lenses is a combination of factors; the power of the lenses, the way the lens sits on your eyes surface and the influence of your eye lids and tears. All need to work in harmony to give good stable vision.
It is always best to take an individual approach to prescribing contact lenses, looking in detail at all of the influences that contribute to vision in contact lens, especially before you commence wear. Only when all these factors are at their best do you get your optimum contact lens vision.